Chemistry, asked by chetanpawar290904, 10 months ago

.Give reasons for the following:

1. Silver Nitrate solution cannot be stored in Copper containers.

2. Gold and Silver do not corrode in air

3. Blue colour of copper sulphate solution starts fading when a zinc rod is dipped in it.

4. Respiration is an endothermic reaction.

5. Photo chemical decomposition reaction finds application in photography.​

Answers

Answered by dubeyladdu01
31

Answer:

Explanation:

1. ans :- We cannot store silver nitrate, AgNO3 solution in copper container because according to reactivity series copper is more reactive than silver. Thus it will displace silver from AgNO3 solution forming copper nitrate soltuion.

2 ans:- Gold and silver are the least reactive metals in the rectivity series, hence can not bond with oxygen easily. Therefore they both can not get corroded easily.

3 . ans :- Blue color of CuSO4 fades when zinc rod is dipped in it. This happens because zinc is higher up in the reactivity series than copper. So zinc reacts with the solution displacing copper to form ZnSOand the Cu metal gets deposited over the rod.

4. ans:- Biological respiration is breathing to bring oxygen into the body. It is not a chemical reaction at all, so it is neither exothermic nor endothermic. ... It is exothermic, but not as exothermic as respiration with oxygen, as the nutrients are not broken down as far, and less energy is released.

5 ans:- Photochemical is caused by the chemical reaction of light. ... Photography is based on photochemical process. When a picture is taken, the silver salts in the photographic film absorb light and chemically change into metallic silver, which produces a dark image on the negative when the film is developed.

Answered by deepsarda
19

1.We cannot store silver nitrate, AgNO3 solution in copper container because according to reactivity series copper is more reactive than silver. Thus it will displace silver from AgNO3 solution forming copper nitrate soltuion .

2 Gold and silver are the least reactive metals in the rectivity series, hence can not bond with oxygen easily. Therefore they both can not get corroded easily.

3 .Blue color of CuSO4 fades when zinc rod is dipped in it. This happens because zinc is higher up in the reactivity series than copper. So zinc reacts with the solution displacing copper to form ZnSO4 and the Cu metal gets deposited over the rod.

4.Biological respiration is breathing to bring oxygen into the body. It is not a chemical reaction at all, so it is neither exothermic nor endothermic. It is exothermic, but not as exothermic as respiration with oxygen, as the nutrients are not broken down as far, and less energy is released.

5  Photochemical is caused by the chemical reaction of light. Photography is based on photochemical process. When a picture is taken, the silver salts in the photographic film absorb light and chemically change into metallic silver, which produces a dark image on the negative when the film is developed.

HOPE IT HEPL'S YOU !!!!

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