The decomposition of formic acid follows firstorder kinetics

The decomposition of formic acid follows first-order kinetics: HCO2H(g) ? CO2(g) + H2(g)

The half-life for the reaction at 550

Solution

k = (0.693/24) = 0.028875 ,

a= 100 % , a-x = 100-87.5 = 12.5,

t = (1/k) ln(a/a-x) ,

t = (1/0.028875) ln(100/12.5)

= 72 sec