pH Buffer Calculations 1

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pH Buffer Calculations 1

1 / 10

Calculate the mass of sodium phenoxide salt ( Mr of 116.1 ) that would need to be added to 75.0 cm3of 0.300 mol dm-3 phenol solution to produce a pH of 9.50

The acid dissociation constant, Ka, for phenol is 1.00 x 10-10 mol dm-3

 

2 / 10

Calculate the pH of a solution produced when 0.582 g of lithium fluoride salt ( Mr of 25.9 )is added to 50.0 cm3 of 0.500 mol dm-3 hydrofluoric acid solution.

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

3 / 10

Calculate the pH of a solution produced when 3.080 g of potassium methanoate salt ( Mr of 84.1 )is added to 80.0 cm3 of 0.900 mol dm-3 methanoic acid solution.

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

 

4 / 10

Calculate the pH of a solution produced when 1.00 g of potassium methanoate salt ( Mr of 84.1 )is added to 90.0 cm3 of 0.100 mol dm-3 methanoic acid solution.

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

5 / 10

Calculate the pH of a solution produced when 49.0 cm3 of 0.100 mol dm-3 sodium hydroxide solution has been added to 50.0cm3 of 0.100 mol dm-3 ethanoic acid solution.

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

6 / 10

Calculate the pH of a solution produced when 40.0 cm3 of 0.100 mol dm-3 sodium hydroxide solution has been added to 50.0cm3 of 0.100 mol dm-3 ethanoic acid solution.

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

7 / 10

Calculate the pH of a solution produced when 25.0 cm3 of 0.100 mol dm-3 sodium hydroxide solution has been added to 50.0cm3 of 0.100 mol dm-3 ethanoic acid solution.

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

8 / 10

Calculate the pH of a solution produced when 20.0 cm3 of 0.100 mol dm-3 sodium hydroxide solution has been added to 50.0cm3 of 0.100 mol dm-3 ethanoic acid solution.

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

9 / 10

Calculate the pH of a solution produced when 10.0 cm3 0.100 mol dm-3 sodium hydroxide solution has been added to 50.0cm3 of 0.100 mol dm-3 ethanoic acid solution.

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

10 / 10

Calculate the mass of potassium cyanide salt ( Mr of 65.1 ) that would need to be added to 94.0 cm3of 0.100 mol dm-3 hydrocyanic acid solution to produce a pH of 8.51

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

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