Q. In the following reaction, $NaOH + S\ \rightarrow A + Na_{2}S + H_{2}O\ ;A\ is$
A) $Na_{2}SO_{4}$
B) $Na_{2}SO_{3}$
C) $Na_{2}S$
D) $Na_{2}S_{2}O_{3}$
Explanation
(d)
$6NaOH + 4S\ \overset{\ \ \ \ \ \mathrm{\Delta}\ \ \ \ \ }{\rightarrow}\ Na_{2}S_{2}O_{3} + 2Na_{2}S + 3H_{2}O$
sod. thiosulphate
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.