Question

help...If exactly 5.0 mL of HNO3 will neutralize 15 mL of 2.0 M NaOH, what is the molarity of the HNO3 solution?
Have no idea what to do.

thank you.

Answer 1

HNO3 + NaOH ==> NaNO3 + H2O
mols NaOH = M x L = ?
Look at the equation. It is 1:1 for base/acid so
mols HNO3 = mols NaOH
The M HNO3 = moles HNO3/L HNO3.