A chemist collects high-resolution kinetic data for a reversible reaction at constant temperature. The smoothed data (rate in mol L⁻¹ s⁻¹) are modeled by the functions
Rate_forward = 0.60e−0.05t
Rate_reverse = 0.60(1−e−0.05t)
where t is in seconds.
Based on these expressions, during which of the following time intervals is there a net formation of products?
a) All times t>41.6s
b) 0s<t<27.7s
c) 0s<t<13.9s
d) 13.9s<t<27.7s