Question

What is the concentration of solution if 100ml sol was prepared by dissolving 0.63 g

Answer 1

Answer:

Explanation:

The concentration of nitric acid HNO₃ solution

= 0.63g in 100 ml

= 6.3g per litre

= 0.1 moles per litre [ As mol. wt of HNO₃ = 63 ]

= 10⁻¹ M

Now, HNO₃ completely ionizes as

HNO₃ + H₂O ===>> H₃O⁺ + NO₃⁻

[ H₃O⁺ ] = [ HNO₃ ] = 10⁻¹ M

So, pH = - log [ H₃O⁺ ]

pH = - log [ 10⁻¹ ]

pH = 1