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How many moles of c6h5coona

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How many moles of C6H5COONa should be added to 1.75 L of 0.0392 mol L-1 C6H5COOH(aq) to produce a solution with a pH of 4.70 ? Assume no change in volume and a temperature of 25 °C.

For C6H5COOH, pKa = 4.21 at 25 °C.

Enter a number accurate to 3 significant figures.

To produce a solution of the desired pH: Add moles of C6H5COONa.

How many moles of NaOH or HCl should be added to 1.00 L of 0.0252 mol L-1 HNO2(aq) to produce a solution with a pH of 2.60 ? Assume the temperature is 25 °C. For HNO2, pKa = 3.14 at 25 °C.

For the moles of NaOH or HCl added, enter a number accurate to 3 significant figures.

To produce a solution of the desired pH:  Add moles of NaOH or HCL (It is one of them)

Reference no: EM132287472

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