ZnCl2

FeBr3

CuCO3

Pb(NO3)2

$Vm\left(MnO_4^-\right)_{t1,t2}\ =\ 3\ Vm\left(H^+\right)_{t1,t2}$

$Vm\left(MnO4-\right)t1,t2\ =\ \frac{1}{3}x\ Vm\left(H+\right)t1,t2$

$Vm\left(MnO4-\right)t1,t2\ =\ \frac{6}{2}x\ Vm\left(H+\right)t1,t2$

គ្មានចម្លើយត្រឹមត្រូវ

$V\left(H2C2O4\right)t\ =\ \frac{6}{5}x\ V\left(H+\right)t$

$V\left(H2C2O4\right)t\ =\ 5\ x\ V\left(H+\right)t$

$V\left(H2C2O4\right)t\ =\ 6\ x\ V\left(H+\right)t$

$V\left(H2C2O4\right)t\ =\ \frac{5}{6}x\ V\left(H+\right)t$

$\%CaCO3\ =\frac{mCaCO3\ x\ 100}{ms}$

$\%CaCO3\ =\ \frac{ms\ x\ 100}{mst}$

$\%CaCO3\ =\ \frac{ms\ x\ 100}{mCaCO3}$

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