Question

The rate of first order reaction is 0.04 mol per litre sec at 10 min and 0.03 mol per litre sec at 20 min after initiation find half life of a reaction

Answer 1

Answer:

U have to just put the values into the formulae for the first order eqn. that is:

K = (2.303/t2 – t1)log(Q1/Q2)

=(2.303/(10)llog(0.04/0.03)

After solving,

K = 0.02876 /min

thalf = 0.693/k = > 24 min approx