The reaction `A(g) to B(g) + 2C(g)` is a first-order reaction with a rate constant of `2.303 xx 10^(-3)s^(-1)`. Strating with 0.1 moles of 'A' in a 2 litre vessel, find the concentration of A after 301 sec when the reaction is allowed to take place at constant pressure at 300 K.

Options

A. 0.0125 M
B. 0.025 M
C. 0.05 M
D. None of these

Answer

B