# Equivalent Weight Worksheet

The equivalent weight can be defined as the weight of a substance that will combine with or replace one mole of hydrogen or one-half mole of oxygen.

Equivalent weight of an element is equal to the atomic weight or formula weight divided by the valence.

Questions:

1. Which of the following oxides is most acidic in nature

(a)    $V_2O_5$

(b)   $V_2O_3$

(c)    $VO_2$

(d)   All are similar acidic in nature

2. Which is the weakest acidic in nature

(a)    $HNO_3$

(b)   $HNO_2$

(c)    $N_3H$

(d)   $NH_3$

3. For the reaction

$2KI + Cl_2 \to 2KCl + I_2$

The equivalent weight of oxidant is:

(a)    M

(b)   M/2

(c)    M/3

(d)   M/4

4. X, Y, Z have oxidation numbers +6, -2, -1 respectively. The possible formula of the molecule will be?

(a)    $XY_2Z_2$

(b)   $X_2YZ$

(c)    $XY_2Z$

(d)   $XYZ_2$

5. In the following ionic reaction:

$xBrO^-_3 + yCr^{+3} + Zh_2o \to HCrO^-_4 + Br_2 + H^+$

The values of x, y, z are:

(a)    x = 6, y = 12, z = 20

(b)   x = 4, y = 8, z = 12

(c)    x = 16, y = 18, z = 22

(d)   x = 6, y = 18, z = 22