579275 579275 21-11-2021 Chemistry contestada what is the ka for 0.03M Solution of HClO4 for 1.90 PH value. A) 7.2x10^-3 B) 8.27x10^-3 C) 8.27x10^-4 D) 6.27x10^-4 (I keep getting 5x10^-3 when I round all the values to 2 decimal places but it’s not in the options)
