Discussion Forum

1)

1 mole of gas A and 1 mole of gas B at $27^{0}$C were pumped  into a 24.6 L volume pre-evacuated  isolated flask.The catalyst coated  inside the flask  catalyses the following  reaction

 $A(g)+B(g)\rightarrow  2D(g)$ .The kinetic energy  of D is 98.03l atm. Calculate the pressure relaised at the end of the reaction

Answer:

Option B

Explanation:

Kinetic energy for n moles  is given by

$K.E=\frac{3}{2}pV$

where, p is the pressure excerted by the gas and v is the volume occupied by gas

$A(g)+b(g) \rightarrow 2D(g)$

 given, Kinetic energy of D =98.03 L atm

$\therefore$  K.E= $\frac{3}{2}pV$

98.03 L atm= $\frac{3}{2} \times p \times 24.6 L$

 p=2.66 atm