<u>Answer:</u> The amount of time required by chlorine gas to effuse is 19 seconds.
<u>Explanation:</u>
Rate of a gas is defined as the amount of gas displaced in a given amount of time.
To calculate the rate of diffusion of gas, we use Graham's Law.
This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:
So,
We are given:
Moles of iodine gas = 0.15 moles
Moles of chlorine gas = 0.15 moles
Time taken by iodine gas = 36 seconds
Molar mass of iodine gas = 254 g/mol
Molar mass of chlorine gas = 71 g/mol
Putting values in above equation, we get:
Hence, the amount of time required by chlorine gas to effuse is 19 seconds.