The following reaction has an activation energy of 262 kj/mol. c4h8(> 2c2h4(g)at 600.0 k the rate constant is 6.1× 10–8 s–1. what is the value of the rate constant at 810.0 k? the reaction: a+> +d rate=k[a][b]^2 has an initial rate of 0.0370m/swhat will the initial rate be if [a] is halved and [b] is tripled? what will the initial rate be if [a] is tripled and [b] is halved?