Question

Soluble salts can be made using a base and an acid. (a) Complete this method of preparing dry crystals of the soluble salt cobalt(II) chloride from the insoluble base cobalt(II) carbonate step by step explanation​

Answer 1

Explanation:

Method

1. place some sulfuric acid in a beaker and warm it in a water bath.
2. add a spatula of copper(II) oxide powder to the acid and stir with a glass rod.
3. continue adding copper(II) oxide powder until it is in excess.
4. filter the mixture to remove the excess copper(II) oxide.

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Answer 2

Explanation:

Salts

A salt is a compound that is formed when the hydrogen atom in an acid is replaced by a metal

For example if we replace the H in HCl with a potassium atom, then the salt potassium chloride is formed, KCl

Salts are an important branch of chemistry due to the varied and important uses of this class of compounds

These uses include fertilisers, batteries, cleaning products, healthcare products and fungicides

Naming salts