JEE Main Chemistry question
An aqueous solution of 0.1 M NH₄Cl will have a pH closer to:
Answer: (D)
Solution
Ka(NH₄⁺)=Kw/Kb=5.56×10⁻¹⁰; [H⁺]=√(5.56×10⁻¹⁰×0.1)=7.45×10⁻⁶; pH≈5.1.
An aqueous solution of 0.1 M NH₄Cl will have a pH closer to:
Ka(NH₄⁺)=Kw/Kb=5.56×10⁻¹⁰; [H⁺]=√(5.56×10⁻¹⁰×0.1)=7.45×10⁻⁶; pH≈5.1.