posted by Sam .
25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L
How do you go about solving this? I think that the 5 step method is involved in finding a solution :/ Please help!! My test is tomorrow :( thanksss!!