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Question
What is meant by 'a family of salts'? Explain with examples.
Solution
Salts having the same positive ions or the same negative ions belong to one family of salts. For example, calcium chloride (CaCl2) and calcium sulphate (CaSO4) belong to the same family of salts called ‘calcium salts’ because they both contain the same positively charged ions, calcium ions (Ca2+). Similarly, zinc sulphate (ZnSO4) and copper sulphate (CuSO4) belong to the same family of salts called ‘sulphate salts’ because they both contain the same negatively charged ions, sulphate ions (SO42-).
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