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Ionic Salts and Their Characteristic

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Question

what happens when CO2 is passed through freshly prepared slaked lime ? write a balanced chemical equation ?

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Solution

Slaked lime is chemically calcium hydroxide or Ca(OH)₂. A saturated solution of calcium hydroxide in water is known as lime water. When carbon dioxide is passed through a freshly prepared solution of lime water, then it turns milky due to the formation of calcium carbonate, which is insoluble in water. Following is the chemical equation for the reaction
Ca(OH)₂ + CO₂ â†’ CaCO₃ + H₂O

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Q. What happens when (give balanced equation) [5 MARKS]
(a) Nitric acid is added to KI (aq.)?
(b) Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
(c) Limestone reacts with nitric acid?

C a C O_{3}

is prepared by passing carbon dioxide gas through slaked lime. Reason: Passing excess of

C O_{2}

through slaked lime leads to the formation of quick lime.

What happens when CO2 is passed through lime water?

Q. What happens when (given balanced equation):
(a) Sulphur is added to hot and conc. HNO₃?
(b) Nitric acid is added to KI (aq)?
(c) Nitric acid is dissolved in large amount of water?
(d) Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
(e) Limestone reacts with nitric acid?

(a) What happens when an acid reacts with a metal carbonate? Explain with the help of an example. Write chemical equation of the reaction involved.

(b) What happens when carbon dioxide gas is passed through lime water?

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