AP EAMCET2011Chemistrys Block Elements
In which of the following reactions hydrogen is not liberated?
Options
- AReaction of fused NaOH with C
- BReaction of NaOH with sulphur
- CHeating the concentrated NaOH with Si
- DReaction of zinc with NaOH
Correct answer
B. Reaction of NaOH with sulphur
Step-by-step solution
Sodium hydroxide reacts with sulphur to give sodium sulphide and sodium thiosulphate. 4 ~S +6 NaOH sodium sulphide 2 Na ₂ ~S + sodium thiosulphate Na ₂ ~S ₂ O ₃ +3 H ₂ O