Question

A first order reaction is $50\%$completed in $1.26\times10^{14}S.$ How much time would it take for $100\%$ completion?

• A. $1.26\times10^{15} S$
• B. $2.52\times10^{14} S$
• C. $2.52\times10^{28} S$
• D. Infinite

Answer 1

Answer: (D)

Infinite

Answer 2

Reaction would be $100\%$ complete only after infinite time which cannot be calculated.