1 mole of gas A and 1 mole of gas B at `27^@C` were pumped into a 24.6 L. volume pre-evacuated isolated flask. The catalyst coated inside the flask catalyses the following reaction
`A(g) + B(g) to 2D (g)` . The kinetic energy of D is 98.03 L atm. Calculate the pressure realised at the end of the reaction.

Options

A. 1.66 atm
B. 2.66 atm
C. 5.33 atm
D. 4.33 atm

Answer

B

Explanation

Kinetic energy for n moles is given by
`K.E = 3/2 pV`
where , p is the pressure exerted by the gas and V is the volume occupied by gas .
`A(g) + B(g) to 2D(g)`
Given : kinetic energy of D = 98.03 L atm
` therefore K.E = 3/2 pV`
98.03 L atm ` = 3/2 xx p xx 24.6 L`
` p = 266 ` atm