CN204791731U - Chemical reaction speed presentation device - Google Patents
Chemical reaction speed presentation device Download PDFInfo
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- CN204791731U CN204791731U CN201520512297.XU CN201520512297U CN204791731U CN 204791731 U CN204791731 U CN 204791731U CN 201520512297 U CN201520512297 U CN 201520512297U CN 204791731 U CN204791731 U CN 204791731U
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- reaction bulb
- reaction
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Abstract
The utility model discloses chemical reaction speed presentation device belongs to high school chemistry experiment instrument field, the on -line screen storage device comprises a base, be equipped with reaction bulb I and reaction bulb II on the base, the bottleneck of reaction bulb I and reaction bulb II all is equipped with the haplopore rubber buffer, reaction bulb I all is equipped with U type pipe with II one sides of reaction bulb, U type pipe links to each other with the reaction bulb through the connecting leg, be equipped with the support in the middle of the base, reaction bulb I and reaction bulb II are located the both sides of support, the support top is equipped with the balancing pole, the support includes outer tube and interior sleeve pipe, interior sleeve pipe passes through the bolt fastening with the balancing pole, interior sleeve pipe one end stretches into in the outer tube, the other end is equipped with the press head, the balancing pole both ends are equipped with the connecting rod, the connecting rod passes the haplopore rubber buffer and gos deep into the reaction bulb, the connecting rod other end is equipped with and carries the thing box, it presss from both sides to be equipped with the stagnant water on the connecting leg that links to each other with reaction bulb I, be equipped with the extraction opening on the reaction bulb I, be equipped with the rubber buffer on the extraction opening. The utility model discloses easily operation lets the influence of the student external factors of observing directly perceived to chemical reaction speed through two presentations.
Description
Technical field
The utility model belongs to high school chemical experiment instrument field, is specifically related to a kind of chemical reaction rate apparatus for demonstrating.
Background technology
Reaction rate is learning content important in senior chemistry course, and this part curriculum requirements students affects the factor of chemical reaction rate, and temperature, pressure, concentration, catalyzer are the extraneous factors affecting chemical reaction rate.By lecture experiment, allow student observe the impact of these factors on chemical reaction rate intuitively, be more conducive to the grasp of student to this part content.Existing apparatus for demonstrating, demonstrates the impact on chemical reaction rate of temperature, catalyzer or concentration, but does not demonstrate the impact of pressure on chemical reaction rate.In addition, some reaction apparatus for demonstrating needs manual time-keeping, and such error is larger.
Utility model content
The purpose of this utility model is to provide chemical reaction rate apparatus for demonstrating, to solve the problem.
The utility model chemical reaction rate apparatus for demonstrating, comprise base, base is provided with reaction bulb I and reaction bulb II, the bottleneck of reaction bulb I and reaction bulb II is equipped with single hole rubber plug, reaction bulb I and reaction bulb II side are equipped with U-tube, U-tube is connected with reaction bulb by connecting leg, support is provided with in the middle of base, reaction bulb I and reaction bulb II are positioned at the both sides of support, balance stem is provided with above support, support comprises outer tube and inner sleeve, inner sleeve and balance stem are bolted, inner sleeve one end is stretched in outer tube, the other end is provided with press head, balance stem two ends are provided with connecting rod, connecting rod stretches into reaction bulb through single hole rubber plug, the connecting rod other end is provided with objective box, the connecting leg be connected with reaction bulb I is provided with tongs, reaction bulb I is provided with bleeding point, bleeding point is provided with rubber plug.
Using method is as follows:
When 1, demonstrating concentration to the affecting of reaction rate, the reactant liquor that reaction bulb I is different with the concentration adding equivalent in reaction bulb II, the response sample of equivalent is added in objective box, downward pressing press head immerses reactant liquor to objective box, observe the situation of change of liquid level in U-tube, intuitively can see the impact of concentration on reaction rate.
When 2, demonstrating catalyzer to the affecting of reaction rate, add catalyzer in an objective box wherein, other operations are the same, and in observation U-tube, the situation of change of liquid level, intuitively can see the impact of catalyzer on reaction rate.
When 3, demonstrating pressure to the affecting of reaction rate, first the tongs on connecting leg is closed, then syringe is used to extract gas in reaction bulb I out a part by bleeding point, with rubber plug jam-pack bleeding point, open tongs, repeat the operation in 1, observe the situation of change of liquid level in U-tube, intuitively can see the impact of pressure on reaction rate.
U-tube is provided with scale, and it is more accurate that observing response produces gas volume.
Be provided with stopwatch in press head, stopwatch switch-linear hybrid press head upper surface, react beginning timing during pressing press head, in conjunction with the change of gas volume, also can calculate reaction rate.
Bolt is provided with pointer, balance stem is provided with angle direction board, along with the carrying out of reaction, response sample in objective box reduces, and due to the impact of Different factor, the speed that response sample reduces is not identical yet, thus cause balance stem run-off the straight, namely be can be observed by pointer, so also can reaction response speed directly perceived, together show the speed of reaction rate with level change in U-tube.
In base, one end is provided with heating resistor, heating resistor external plug, the reaction bulb of heating, and demonstration temperature is on the impact of reaction rate.
Compared with prior art, the utility model has the advantage of: the utility model chemical reaction rate apparatus for demonstrating, solve in existing apparatus for demonstrating and can not demonstrate the impact of pressure on reaction rate, device is simple, be easy to operation, and change two presentations by U-tube level change and pointer and allow student's direct vision to the impact of extraneous factor on chemical reaction rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, base, 2, rubber plug, 3, bleeding point, 4, objective box, 5, reaction bulb I, 6, single hole rubber plug, 7, connecting rod, 8, balance stem, 9, bolt, 10, pointer, 11, press head, 12, stopwatch switch, 13, stopwatch, 14, angle direction board, 15, inner sleeve, 16, outer tube, 17, U-tube, 18, heating resistor, 19, plug, 20, scale, 21, support, 22, tongs, 23, reaction bulb II, 24, connecting leg.
Embodiment
Contrast accompanying drawing below, by the description to optimum embodiment, embodiment of the present utility model is described in further detail.
As shown in Figure 1, chemical reaction rate apparatus for demonstrating, comprise base 1, base 1 is provided with reaction bulb I 5 and reaction bulb II 23, the bottleneck of reaction bulb I 5 and reaction bulb II 23 is equipped with single hole rubber plug 6, reaction bulb I 5 and reaction bulb II 23 side are equipped with U-tube 17, U-tube 17 is connected with reaction bulb by connecting leg 24, support 21 is provided with in the middle of base 1, reaction bulb I 5 and reaction bulb II 23 are positioned at the both sides of support 21, balance stem 8 is provided with above support 21, support 21 comprises outer tube 16 and inner sleeve 15, inner sleeve 15 is fixed by bolt 9 with balance stem 8, inner sleeve 15 one end is stretched in outer tube 16, the other end is provided with press head 11, balance stem 8 two ends are provided with connecting rod 7, connecting rod 7 stretches into reaction bulb through single hole rubber plug 6, connecting rod 7 other end is provided with objective box 4, the connecting leg 24 be connected with reaction bulb I 5 is provided with tongs 22, reaction bulb I 5 is provided with bleeding point 3, bleeding point 3 is provided with rubber plug 2.
Using method is as follows:
When 1, demonstrating concentration to the affecting of reaction rate, the reactant liquor that reaction bulb I 5 is different with the concentration adding equivalent in reaction bulb II 23, the response sample of equivalent is added in objective box 4, downward pressing press head 11 to objective box 4 immerses reactant liquor, observe the situation of change of liquid level in U-tube 17, intuitively can see the impact of concentration on reaction rate.
When 2, demonstrating catalyzer to the affecting of reaction rate, add catalyzer in an objective box 4 wherein, other operations are the same, and in observation U-tube 17, the situation of change of liquid level, intuitively can see the impact of catalyzer on reaction rate.
When 3, demonstrating pressure to the affecting of reaction rate, first the tongs 22 on connecting leg 24 is closed, then syringe is used to extract gas in reaction bulb I 5 out a part by bleeding point 3, with rubber plug 2 jam-pack bleeding point 3, open tongs 22, repeat the operation in 1, observe the situation of change of liquid level in U-tube 17, intuitively can see the impact of pressure on reaction rate.
U-tube 17 is provided with scale 20, and it is more accurate that observing response produces gas volume.
Be provided with stopwatch 13 in press head 11, stopwatch switch 12 arranges press head 11 upper surface, reacts beginning timing, in conjunction with the change of gas volume, also can calculate reaction rate during pressing press head 11.
Bolt 9 is provided with pointer 10, balance stem 8 is provided with angle direction board 14, along with the carrying out of reaction, response sample in objective box 4 reduces, and due to the impact of Different factor, the speed that response sample reduces is not identical yet, thus cause balance stem 8 run-off the straight, namely be can be observed by pointer 10, so also can reaction response speed directly perceived, together show the speed of reaction rate with level change in U-tube 17.
In base 1, one end is provided with heating resistor 18, heating resistor 18 external plug 19, the reaction bulb of heating, and demonstration temperature is on the impact of reaction rate.
In sum, the utility model chemical reaction rate apparatus for demonstrating, solve in existing apparatus for demonstrating and can not demonstrate the impact of pressure on reaction rate, device is simple, be easy to operation, and change two presentations by U-tube level change and pointer and allow student's direct vision to the impact of extraneous factor on chemical reaction rate.
The above is exemplarily described the utility model; obvious the utility model specific implementation is not subject to the restrictions described above; no matter be do any change in its shape or structure; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (5)
1. a chemical reaction rate apparatus for demonstrating, comprise base (1), base (1) is provided with reaction bulb I (5) and reaction bulb II (23), the bottleneck of reaction bulb I (5) and reaction bulb II (23) is equipped with single hole rubber plug (6), reaction bulb I (5) and reaction bulb II (23) side are equipped with U-tube (17), U-tube (17) is connected with reaction bulb by connecting leg (24), it is characterized in that, support (21) is provided with in the middle of base (1), reaction bulb I (5) and reaction bulb II (23) are positioned at the both sides of support (21), support (21) top is provided with balance stem (8), support (21) comprises outer tube (16) and inner sleeve (15), inner sleeve (15) is fixed by bolt (9) with balance stem (8), inner sleeve (15) one end is stretched in outer tube (16), the other end is provided with press head (11), balance stem (8) two ends are provided with connecting rod (7), connecting rod (7) stretches into reaction bulb through single hole rubber plug (6), connecting rod (7) other end is provided with objective box (4), the connecting leg (24) be connected with reaction bulb I (5) is provided with tongs (22), reaction bulb I (5) is provided with bleeding point (3), bleeding point (3) is provided with rubber plug (2).
2. chemical reaction rate apparatus for demonstrating according to claim 1, is characterized in that, U-tube (17) is provided with scale (20).
3. chemical reaction rate apparatus for demonstrating according to claim 1, is characterized in that, is provided with stopwatch (13) in press head (11), and stopwatch switch (12) arranges press head (11) upper surface.
4. chemical reaction rate apparatus for demonstrating according to claim 1, is characterized in that, bolt (9) is provided with pointer (10), and balance stem (8) is provided with angle direction board (14).
5. chemical reaction rate apparatus for demonstrating according to claim 1, is characterized in that, base (1) interior one end is provided with heating resistor (18), heating resistor (18) external plug (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512297.XU CN204791731U (en) | 2015-07-15 | 2015-07-15 | Chemical reaction speed presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512297.XU CN204791731U (en) | 2015-07-15 | 2015-07-15 | Chemical reaction speed presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204791731U true CN204791731U (en) | 2015-11-18 |
Family
ID=54531734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520512297.XU Expired - Fee Related CN204791731U (en) | 2015-07-15 | 2015-07-15 | Chemical reaction speed presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204791731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122464A (en) * | 2017-12-22 | 2018-06-05 | 南瑞佳 | Intuitively chemical reaction rate apparatus for demonstrating and its demenstration method |
-
2015
- 2015-07-15 CN CN201520512297.XU patent/CN204791731U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122464A (en) * | 2017-12-22 | 2018-06-05 | 南瑞佳 | Intuitively chemical reaction rate apparatus for demonstrating and its demenstration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160715 |