O (ten -7 M) is minimal in comparison to the H

Question 9. 1. You are provided with 0.1 M NH_cuatroOH solution and ammonium chloride crystals. (Given: pKb for NH₄OH is 4.7 at 25°C)

2. What volume of 0.six M sodium formate solution is required to prepare a buffer solution of pH 4.0 by mixing it with 100 ml of 0.8 M formic acid. (Given: pK_a for formic acid is step three.75.) Answer: 1.

We understand that pH + pOH = 14 9 + pOH = 14 = pOH = fourteen – 9 = 5

[NH₄Cl] = 0.1 M x 1.995 = 0. 1995 M escort girl Huntsville =0.2 M Amount of NH₄CI required to prepare 1 litre 0.2 M solution = Strength of NH₄CI x molar mass of NH₄CI = 0.2 x 535 = g g ammonium chloride is dissolved in water and the solution is made up to one litre to get 0.2 M solution.Continue reading→