1) A buffer can be prepared by mixing two solutions. Determine if each of the following…

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1) A buffer can be prepared by mixing two solutions. Determine if each of the following…

1)

A buffer can be prepared by mixing two solutions. Determine if each of the following mixtures will result in a buffer solution or not.

1) Mixing 100.0 mL of 0.1 M HCl with 100.0 mL of 0.1 M NaOH                              [ Select ]                       [“No, it will not result in a buffer solution.”, “Yes, it will result in a buffer solution.”]

2) Mixing 100.0 mL of 0.1 M CH3COOH with 100.0 mL of 0.05 M mol CH3COONa                              [ Select ]                       [“Yes, it will result in a buffer solution.”, “No, it will not result in a buffer solution.”]

3) Mixing 100.0 mL of 0.1 M NH3 with 100.0 mL of 0.1 M NH4Cl                              [ Select ]                       [“No, it will not result in a buffer solution.”, “Yes, it will result in a buffer solution.”]

4) Mixing 100.0 mL of 0.1 M NH3 with 100.0 mL of 0.05 M HNO3                              [ Select ]                       [“No, it will not result in a buffer solution.”, “Yes, it will result in a buffer solution.”]

5) Mixing 100.0 mL of 0.1 M NH3 with 100.0 mL of 0.1 M HNO3                              [ Select ]                       [“No, it will not result in a buffer solution.”, “Yes, it will result in a buffer solution.”]

2) A 1.0 L solution initially contains 0.2 M CH3COOH. Approximate the number of moles of CH3COOH and CH3COO in the solution after 0.1 mol of solid NaOH is added, and calculate the pH of the resulting solution. Ka of CH3COOH is 1.8

×10−5.

1) The number of moles of CH3COOH present is                            [ Select ]                       [“0.0”, “0.2”, “0.1”]         mol.

2) The number of moles of CH3COO present is                            [ Select ]                       [“0.1”, “0.0”, “0.2”]         mol.

3) The pH of the resulting solution is                            [ Select ]                       [“4.44”, “4.74”, “5.05”]         .

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Reference no: EM132069492

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