Question: why hcl is 37 pure?
Answer: HCl is 37℅ by wt. Because HCl is in gaseous form so only 37% HCl can be dissolved in Water while for H2So4 it is in liquid form being an aquous solvent is is dissolved in 99% in water. ... This solution is used to neutralize 13 mL of a 0.80 mol / L sulfuric acid (H2SO4) solution.