Explain why the gas fizzes out (bubbles out) when a soda water b

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 Multiple Choice QuestionsShort Answer Type

41. straight N subscript 2 left parenthesis straight g right parenthesis space plus space straight O subscript 2 left parenthesis straight g right parenthesis space space rightwards harpoon over leftwards harpoon space space space 2 NO left parenthesis straight g right parenthesis semicolon space increment straight H space equals space plus ve
What is the effect of temperature over this equilibrium?
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42.

The reaction
straight N subscript 2 left parenthesis straight g right parenthesis space plus space 3 straight H subscript 2 left parenthesis straight g right parenthesis space space space rightwards harpoon over leftwards harpoon space space space space 2 NH subscript 3 left parenthesis straight g right parenthesis is at equilibrium, NH subscript 3 formed is absorbed in sulphuric acid, what happens to the equilibrium?

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43.

What happens when pressure is applied on ice?

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44.

Define Le-Chatelier's principle ?

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45.

In a gaseous system at equilibrium straight a plus straight b space rightwards harpoon over leftwards harpoon space 2 straight c plus straight d comma 3 mole of inert gas is pumped into the vessel at constant pressure. What will be its effect on equilibrium?

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 Multiple Choice QuestionsLong Answer Type

46. What is a physical equilibrium? What type of equilibria are involved in physical equilibrium?
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 Multiple Choice QuestionsShort Answer Type

47.

What is the effect of pressure on the solubility of a gas in a liquid?
Or
State Henry's Law.

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48. Explain why the gas fizzes out (bubbles out) when a soda water bottle is opened?


In soda water bottle, CO2 gas is dissolved in water only under pressure. As soon as the bottle is opened, the pressure inside the bottle tends to decrease the atmospheric pressure, so the solubility decreases. The dissolved gas escapes from the bottle all of a sudden resulting in fizz. 
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49.

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.
(i) What is the initial effect of the change on vapour pressure?

(ii) How do rates of evaporation and condensation change initially?

(iii) What happens when equilibrium is restored finally and what will be the final vapour pressure?

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 Multiple Choice QuestionsLong Answer Type

50. What are the general characteristics of equilibria involving physical process?
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