------ H3AsO4(aq) -------------> H^+ (aq) + H2AsO4^-(aq)
I ----- 0.483 0 0
C---- -x ---------------------- +x ------- +x
E ---- 0.483-x ------------------- +x --------- + x
Ka1 = [H^+][H2AsO4^-]/[H3AsO4]
6*10^-3 = x*x/(0.483-x)
6*10^-3*(0.483-x) = x^2
x = 0.051
[H^+] = x = 0.051M
[H2ASO4^-] = x = 0.051M
H2AsO4^- (aq) ------------> H^+ (aq) + HAsO4^2-(aq)
Ka2 = [H^+][HAsO4^2-]/[H2AsO4^-]
1*10^-7 = 0.051[H2AsO4^2-]/0.051
[H2AsO4^2-] = 1*10^-7 M
HAsO4^2- (aq) ------------> H^+ (aq) + AsO4^3- (aq)
Ka3 = [H^+][AsO4^3-]/[HAsO4^2-]
3.2*10^-12 = 0.051[AsO4^3-]/1*10^-7
[AsO4^3-] = 3.2*10^-12*1*10^-7/(0.051) = 6.3*10^-18M
Arsenic Acid (H3AsO4) has the ability to act as a trip as the ability to act...
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