Question

0.365 gm of hcl was dissolved in 4 litres of water.find the pH of solution​

Answer 1

Answer:

Number of moles in 0.365 grams of HCl = given mass /molar mass

= 0.365/36.5

= 0.01 moles

These 0.01 moles of HCl are present in 1 litre.

So, the concentration of H⁺ = 0.01 moles/litre = 10⁻² moles/litre

pH = -log[H⁺] = -log[10⁻²] = 2

Thus, the pH of o.365 grams of HCl present in 1 litre of solvent is 2.