Question

Which of the following statement is wrong ?

• A. The two sulphur atoms in the thiosulphate ions occupy equivalent positions
• B. Ice results from cooling of water whereas snow results from cooling of vapours to solid
• C. l2Formation of ice is solidification whereas formation of snow is Hoar frost
• D. Ice sublimes on moon

Answer 1

Answer: (A)

The two sulphur atoms in the thiosulphate ions occupy equivalent positions

Answer 2

${}_{16}^{35}S + SO_{3}^{2 -}$ ¾® $\lbrack_{16}^{35}SSO_{3}\rbrack^{2 -}$ $\overset{\quad 2H^{+}\quad}{\rightarrow}$ ${}_{16}^{35}S + H_{2}O + SO_{2}$The tagging technique confirms that two S atoms in S₂O₃^2– ions do not occupy equivalent positions.

Also, water $\overset{\quad solidification\quad}{\rightarrow}$ ice

ice $\overset{\rightarrow}{\quad subl芀ation\quad}$ vapour $\overset{\rightarrow}{\quad Hoarfrost\quad}$ice

ice ¾® vapour

when ext. pressure is reduced on ice, P_ext at moon = 0