Question

A first order reaction is 50% complete in 20 minute What is rate constant?

Options

• 0.0563 min^–1

• 0.03465 min^–1

• 0.01267 min^–1

• 0.01630 min^–1

Answer 1

0.03445 min^–1 

Explanation:

Rate constant (k) = `0.693/((20 min))` = 0.03465 min^–1