To balance the chemical equation, we first need to write out the unbalanced equation: Ba(HS)2 + K2Cr2O7 + H2SO4 → ? Now, let's balance the equation: Ba(HS)2 + K2Cr2O7 + H2SO4 → BaSO4 + Cr2(SO4)3 + K2SO4 + H2O Therefore, the balanced chemical equation is: Ba(HS)2 + K2Cr2O7 + H2SO4 → BaSO4 + Cr2(SO4)3 + K2SO4 + H2O