Question

4g of a gas occupy 1.12 L at STP. The molar mass of the gas
O 32 g mol-1
O 80 g mol-1
O 60 g mol-1
O 16 g mol-1​

Answer 1

Answer:

2 option is the answer to this

Answer 2

The molar mass of the gas is 80 g mol-1. (Option 2)

Given:

4g of gas occupies 1.12 L at STP.

To Find:

The molar mass of the gas.

Solution:

At STP, 1 mole of any gas occupies a volume of 22.4 L.

Here, at STP 1.12 L volume is occupied by 4g of the gas.

Therefore, 22.4 L volume is occupied by $\frac{4*22.4}{1.12}$ g = 80 g of the gas.

1 mole of gas = 80 g

Thus, the molar mass of the gas is 80 g mol-1.

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