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.

In this article you can find some questions and their answers related to equivalent weights:

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

 

Answers:
1.(a)      2. (d)     3. (b)     4. (a)     5. (d)



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