A student obtained the following data for the decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °C. H2O2(aq)H2O(l) + ½ O2(g) [H2O2], M 4.90×10-2 2.45×10-2 1.23×10-2 6.15×10-3 time, min 0 7.61 15.2 22.8 (1) What is the half-life for the reaction starting at t=0 min? min What is the half-life for the reaction starting at t=7.61 min? min Does the half-life increase, decrease or remain constant as the reaction proceeds? (2) Is the reaction zero, first, or second order? (3) Based on these data, what is the rate constant for the reaction? min-1