pH Buffer Calculations 2

Calculate the mass of sodium ethanoate salt ( Mr of 82 ) that would need to be added to 600 cm³ of 0.300 mol dm^-3 ethanoic acid solution to produce a pH of 5.00

The acid dissociation constant, Ka, for ethanoic acid is 1.70 x 10^-5 mol dm^-3

Calculate the mass of sodium methanoate salt ( Mr of 68 ) that would need to be added to 50.0 cm³ of 0.110 mol dm^-3 methanoic acid solution to produce a pH of 4.75

The acid dissociation constant, Ka, for methanoic acid is 1.78 x 10^-4 mol dm^-3

Calculate the mass of lithium ethanoate salt ( Mr of 66.0 ) that would need to be added to 45.0 cm³ of 0.200 mol dm^-3 ethanoic acid solution to produce a pH of 4.54

The acid dissociation constant, Ka, for ethanoic acid is 1.70 x 10^-5 mol dm^-3

Calculate the mass of sodium ethanoate salt ( Mr of 82 ) that would need to be added to 50.0 cm³ of 0.100 mol dm^-3 ethanoic acid solution to produce a pH of 5.20

The acid dissociation constant, Ka, for ethanoic acid is 1.70 x 10^-5 mol dm^-3

Calculate the pH of a solution produced when 0.100 g of sodium ethanoate salt ( Mr of 82 )is added to 50.0 cm³ of 0.100 mol dm^-3 ethanoic acid solution.

The acid dissociation constant, Ka, for ethanoic acid is 1.70 x 10^-5mol dm^-3

Calculate the pH of a solution produced when 0.458 g of potassium cyanide salt ( Mr of 65.1 )is added to 94.0 cm³ of 0.100 mol dm^-3 hydrocyanic acid solution.

The acid dissociation constant, Ka, for hydrocyanic acid is 6.20 x 10^-10mol dm^-3

Calculate the pH of a solution produced when 1.00 g of sodium phenoxide salt ( Mr of 116.1 )is added to 75.0 cm³ of 0.300 mol dm^-3 phenol solution.

The acid dissociation constant, Ka, for phenol is 1.0 x 10^-10mol dm^-3

Calculate the pH of a solution produced when 75.0 cm³ of 0.300 mol dm^-3 lithium hydroxide solution has been added to 50.0cm³ of 0.500 mol dm^-3 hydrofluoric acid solution.

The acid dissociation constant, Ka, for hydrofluoric acid is 6.60 x 10^-4 mol dm^-3

Calculate the pH of a solution produced when 20.0 cm³ of 0.200 mol dm^-3 potassium hydroxide solution has been added to 80.0cm³ of 0.100 mol dm^-3 methanoic acid solution.

The acid dissociation constant, Ka, for methanoic acid is 1.78 x 10^-4 mol dm^-3

Calculate the pH of a solution produced when 20.0 cm³ of 0.200 mol dm^-3 potassium hydroxide solution has been added to 90.0cm³ of 0.100 mol dm^-3 methanoic acid solution.

The acid dissociation constant, Ka, for methanoic acid is 1.78 x 10^-4 mol dm^-3