Chemistry JAMB

Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of?

A. CaCO3
B. Na2CO3
C. Na2SO4
D. CaSO4

Correct Answer:

Option A – CaCO3

Explanation

Permanent hardness in water= Mg and Ca Sulphate.
Temporary hardness in water= Mg and Ca Carbonate.

Temporary hardness of water is caused by Magnesium and calcium hydrogencarbonate. It is formed when rainwater containing dissolved CO2 flows over a deposit of CaCO3

i.e CaCO3 + CO2 + H2O → Ca(HCO3)2

Sunday

Share
Published by
Sunday
Tags: Chemistry

Recent Posts

OOU JUPEB Admission For Agricultural Extension

Do you want to study Agricultural Extension in OOU? Before you apply for the OOU…

10 months ago

OOU JUPEB Admission For Agricultural Economics

Do you want to study Agricultural Economics in OOU? Before you apply for the OOU…

10 months ago

OOU JUPEB Admission For Cooperative and Business Management

Do you want to study Cooperative and Business Management in OOU? Before you apply for…

10 months ago

OOU JUPEB Admission For Home and Hotel Management

Do you want to study Home and Hotel Management in OOU? Before you apply for…

10 months ago

OOU JUPEB Admission For Animal Production

Do you want to study Animal Production in OOU? Before you apply for the OOU…

10 months ago

OOU JUPEB Admission For Crop Production

Do you want to study Crop Production in OOU? Before you apply for the OOU…

10 months ago