a solution of sulfuric acid was titrated with sodium hydroxide. if you took 23.7 mL of .025 M NaOH to reach the endpoint with a 5.0 mL sample of the acid what was its concentration?

Answer 1

2NaOH + H2SO4 ==> Na2SO4 + 2H2O

mols NaOH = M x L = ?
mols H2SO4 = 1/2 mols NaOH (look at the coefficients in the balanced equation).
M H2SO4 = mols H2SO4/L H2SO4