Question

Identify the correct descending order of equivalent weights :

I) Ag II) H III) Cu IV) Zn

• A. I, IV, III, II
• B. I, III, IV, II
• C. I, II, IV, III
• D. IV, II, III, I

Answer 1

The correct option is A I, IV, III, II

$\frac{weight}{\text{equivalent weight}}=no.ofequivalent$
$=no.ofmoles\times N-factor$
$\therefore \text{Equivalent weight}\alpha \frac{1}{N-factor}$
$\alpha \frac{1}{\text{no. of electron required to reduce}}$
$\text{Equivalent weight}=\frac{M.W.}{N-factor}$
$\therefore forAg=\frac{108}{1}$
$forZn=\frac{66}{2}=33$
$forCu=\frac{64}{2}=32$
$forH=\frac{1}{2}=0.5$
$\therefore olderisAg,Zn,Cu,H$