NEET2026Chemistryp Block Elements (Group 13 & 14)Actual
In potash alum, the ratio of K ^+ and SO₄²⁻ ions is
Options
- A3:2
- B1:2
- C2:1
- D2:3
Correct answer
B. 1:2
Step-by-step solution
The chemical formula of potash alum is K ₂ SO ₄ Al ₂( SO ₄)₃ 24 H ₂ O . In one formula unit of potash alum, the number of K ^+ ions is 2 . The number of SO ₄²⁻ ions is 1 + 3 = 4 . The ratio of K ^+ to SO ₄²⁻ ions is 2:4 , which simplifies to 1:2 . Answer: 1:2