A buffer is made by dissolving 4.900 g of sodium formate (NaCHO2) in 100.00 mL of...

A buffer is made by dissolving 4.900 g of sodium formate (NaCHO2) in 100.00 mL of a 0.31 M solution of formic acid (HCHO2). The Ka of formic acid is 1.8 x 10-4.

a) What is the pH of this buffer?

b) Write two chemical equations showing how this buffer neutralizes added acid and added base.

c) What mass of solid NaOH can be added to the solution before the pH rises above 4.60?

Expert Solution

queen_honey_blossom answered 2 years ago

A buffer is made by dissolving 4.800 g of sodium formate (NaCHO2) in 100.00 mL of...

A buffer is made by dissolving 4.800 g of sodium formate (NaCHO2) in 100.00 mL of a 0.30 M solution of formic acid (HCHO2). The Ka of formic acid is 1.8 x 10-4. a) What is the pH of this buffer? b) Write two chemical equations showing how this buffer neutralizes added acid and added base. c) What mass of solid NaOH can be added to the solution before the pH rises above 4.60?

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