Question

One gram of X- on strong heating gave 160 ml of gas at STP. What could be ‘X’

Answer 1

Answer:

Equivalent mass =

Weight of oxygen

Weight of the metal

×8

Moles of O

2

liberated at STP =

22400

112

=0.005 moles.

Therefore, weight of O

2

=0.005×32=0.16 g

Weight of the metal = Weight of metal oxide - Weight of oxygen= 2−0.16 = 1.84.

Equivalent weight =

0.16

1.84

x 8 = 92.