Question

What is the molarity of a HCl solution that
contains 7.15 g of HCl in 495 mL of solution?
Answer in units of M.

Answer 1

Molar mass of HCl is 36.5 gms.

Thus, no. of moles $=7.15/36.5$

Molarity is No. of moles of solute per litre solution.

Thus, molarity $=7.15/(36.5*0.495)=0.3957 M$