Question

When performing a titration, 23.65 mL of 1.25 M calcium carbonste was used to neutralize 9.68 mL of HCl. What is the concentration of the HCl solution?
(Create a balanced equation first)

Answer 1

carbonate*

Answer 2

2HCl + CaCO3 ==> CaCl2 + CO2 + H2O
moles CaCO3 = M x L = ??
Convert moles CaCO3 to moles HCl using the coefficients in the balanced equation.
now M HCl = moles HCl/L HCl.