Question

A sample of caco3 50% purity reacts completely with 0.1m 500ml hcl solution

Answer 1

There is however a problem . Ca(OH)2 has a water solubility of approx 1.7g/l at room temperature. A 0.1 M solution of Ca(OH)2 , Mr = 74g, requires 7.4g/l in solution.

A 0.1M solution of ca(OH)2 doesn’t exist.