HARD AND SOFT WATER

SOFT & HARD ACIDS & BASES

Covalent & Metallic Hydrides||Ortho & para Hydrogen,||Water & Its Properties||Hard & SOFt Water

Hard : Stone :: Soft : ?

Assertion : Oscillations of hard spring are slow than soft spring. Reason : For hard spring constant is larger than soft spring constant.

Difference between Hard water and Soft water

Distinguish between : a. Hard water and soft water b. Temporary hardness and permanent hardness

Explain the terms hard water and soft water. Write a note on the (ii) Calgon method for the removal of hardness of water.

Explain the terms hard water and soft water. Write a note on the (i) Ion - exchange method.