Question

1.7g of an unknown gas occupies 2.24l at n.t.p. calculate its molecular mass. identify the mass .

Answer 1

Answer:- Molecular mass of the gas is 18.24 gram per mol.

Solution:- NTP means normal temperature(293 K) and pressure(1 atm). At NTP, the volume of 1 mol of a gas is 24.04 L.

Now, with the help of this, the moles of the gas for it's 2.24 L as:

$2.24L(\frac{1mol}{24.04L})$

= 0.0932 mol

On dividing the given grams by the moles we can calculate the molecular mass of the gas.

molecular mass = $\frac{1.7g}{0.0932mol}$

= $\frac{18.24g}{mol}$

So, the molecular mass of the gas is 18.24 gram per mol.