What chemical reactions take place when quicklime is added to water filled in a bucket?

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Solution

When quick lime is added to water, slacked lime is formed and a lot of heat is generated. This heat rises the temperature of the container due to which the reaction mixture becomes hot. So it can be said that the chemical reaction between quicklime and water to form slacked lime is characterised by a change in temperature and is an exothermic reaction.

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What happens chemically when quicklime is added to water filled in a bucket ?

(a) State the various characteristics of chemical reactions.

(b) State one characteristic each of the chemical reaction which takes place when :
(i) dilute hydrochloric acid is added to sodium carbonate

(ii) lemon juice is added gradually to potassium permanganate solution

(iii) dilute sulphuric acid is added to barium chlorid solution

(iv) quicklime is treated with water

(v) wax is burned in the form of a candle

When water is added to quicklime rise in temperature is observed. This is an example of _______ reaction.

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