If 40 mL of 0.030 M HNO3 are required to titrate 30 mL of Ba(OH)2, what is the molarity of the Ba(OH)2 solution?

Answer 1

2HNO3 + Ba(OH)2 ==> Ba(NO3)2 + 2H2O
mols HNO3 = M x L = 0.030 M x 0.040 L = ?
From the equation you know that 2 mols HNO3 = 1 mol Ba(OH)2; therefore, mols Ba(OH)2 = 1/2 mols HNO3.
M Ba(OH)2 = mols Ba(OH)2/L Ba(OH)2 = ?

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