Question

The general formula of zeolite is \(Na_2Z\). In this \(Z\) represents

• A. \(AlSi_2O_8\cdot xH_2O\)
• B. \(Al_3Si_2O_8\cdot xH_2O\)
• C. \(Al_2Si_2O_8\cdot xH_2O\)
• D. \(AlO_2\cdot xH_2O\)

Hint:

Zeolites are hydrated aluminosilicates. In sodium zeolite, \(Na^+\) ions are exchangeable and help in removing hardness of water.

Answer 1

The Correct Option is C

Step 1: Interpret the zeolite formula Na₂Z.
Na₂Z means two Na⁺ ions balance the framework charge. Z is the aluminosilicate skeleton Al₂Si₂O₈·xH₂O characteristic of zeolites.

Step 2: Final Answer:
Al₂Si₂O₈·xH₂O (option 3).