mical KineticsA reaction which is of first order w.r.t. reactantA, has

1.	mical KineticsA reaction which is of first order w.r.t. reactantA, has a rate constant 6 min-. If we start with[A] 0.5 mol L-1, when would [A] reach thevalue of 0.05 mol L-(a) 0.384 min(c) 3min/2013/(b) 0.15min(d) 3.84min
Answer» For a first order reaction T= 1/k ×ln(Ao/At) Where Ao is initial concentration ,At is concentration at time t and k is rate constant. So your answer is ln10/6 = 0.384 mins Hence, option (a) is correct.

mical KineticsA reaction which is of first order w.r.t. reactantA, has a rate constant 6 min-. If we start with[A] 0.5 mol L-1, when would [A] reach thevalue of 0.05 mol L-(a) 0.384 min(c) 3min/2013/(b) 0.15min(d) 3.84min

Answer»

For a first order reaction

T= 1/k ×ln(Ao/At)

Where Ao is initial concentration ,At is concentration at time t and k is rate constant.

So your answer is ln10/6 = 0.384 mins

Hence, option (a) is correct.