At a given temperature and pressure 64gm of Oxygen and Xgm of H2 occupy the same volume. Then x=....gm

Question

At a given temperature and pressure 64gm of Oxygen and Xgm of H2 occupy the same volume. Then x=....gm (A) 1 (B) 2 (C) 3 (D) 4

Tardigrade Admin · Accepted Answer

Since they occupy same volume, the two gases should contain same number of molecules, i.e. they have same number of moles.
Now 1 mole of oxygen

= 32 g m

.
Hence

64 g m = 2 m o l e

of oxygen.

∴

number of moles of hydrogen is

2.

1 mole of hydrogen

= 2 g m

Hence

X = 4 g m

Q. At a given temperature and pressure 64gm of Oxygen and Xgm of H2​ occupy the same volume. Then x=....gm