Question

Give a word equations to represent the following chemical reactions
(a) Copper(II) sulphate pentahydrate loses all its water at 260℃.
(b) Sodium carbonate reacts with dilute hydrochloric acid to form sodium chloride, water, and carbon dioxide.

Answer 1

Explanation:

b) When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide and water are formed. ... When carbon dioxide gas formed in the form of brisk effervescence is passed through lime water, it turns the lime water milky

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Answer 2

Answer:

When copper(II) sulfate pentahydrate (CuSO4•5H2O) is heated, it decomposes to the dehydrated form. The waters of hydration are released from the solid crystal and form water vapor.

The hydrated form is medium blue, and the dehydrated solid is light blue. 

The balanced equation is: 

CuSO4•5H2O(s) heat→ CuSO4(s) + 5H2O(g)

If 3.63g CuSO4•5H2O is decomposed to CuSO4, predict the mass of the remaining light blue solid.