elianamxx

Is it 0.092?
I got this by using the information from pH 4 which is 15 and doubling it to make 30 and taking away 5 (we get 5 from halving the the rate for reaction at pH6) to get 25.

0.071 x 2= 0.142
0.100/2 =0.05
0.142+0.05 =0.092