Question

If a 0.3753 g sample of sodium bicarbonate (80.9%) is titrated with 0.9155N sulfuric acid, what volume of the acid should be required to produce an end point?

Answer 1

C_n = n/V

n = C_n x V

n (NaHCO₃) = n (H₂SO₄)

m (NaHCO₃)=0.3753 x 0.809 = 0.3036 g

M (NaHCO₃) = 84 g/mol

n (NaHCO₃) = 0.3036/84.007 = 0.0036 eq

n (NaHCO₃) = n (H₂SO₄) = 0.0036 eq

V (H₂SO) = 0.9155 x 0.0036 = 0.0033 L