将硫酸钾,硫酸铝,硫酸钾铝三种盐混合溶于硫酸酸化的水中,测得c(SO42-)=0.105mol/L,c(Al3+)=0.055mol/L,c(H+)=0.010mol/L,则c(K+)为A.0.455mol/LB.0.035mol/LC.0.055mol/LD.0.04mol/L请不要用电荷守恒来做,我还没学.

Question

将硫酸钾,硫酸铝,硫酸钾铝三种盐混合溶于硫酸酸化的水中,测得c(SO42-)=0.105mol/L,c(Al3+)=0.055mol/L,c(H+)=0.010mol/L,则c(K+)为
A.0.455mol/L B.0.035mol/L C.0.055mol/L D.0.04mol/L
请不要用电荷守恒来做,我还没学.

Answer 1

1molK2SO4 2molK+,1molSO4 2- (x)1molAl2(SO4)3 2molAl3+,3molSO4 2- (y)1molKAl(SO4)2 1molK+,1molAl3+,2molSO4 2- (z)1molH2SO4 2molH+,1mol SO4 2-c(H+)=0.010mol/L,c(H2SO4)=0.005mol/Lx+3y+2z=0.105-0.005=0.01...