Part A What is the pH of a buffer prepared by adding 0.607 mol of the...

Part A What is the pH of a buffer prepared by adding 0.607 mol of the weak acid HA to 0.406 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7. Express the pH numerically to three decimal places. Answer: pH = 6.072

Part C What is the pH after 0.195 mol of NaOH is added to the buffer from Part A? Assume no volume change on the addition of the base. Express the pH numerically to three decimal places.

Expert Solution

queen_honey_blossom answered 2 years ago

Part A: What is the pH of a buffer prepared by adding 0.405 mol of the...

Part A: What is the pH of a buffer prepared by adding 0.405 mol of the weak acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7. Part B: What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Part C: What is the pH after 0.195 mol of NaOH is added to...

PART A: What is the pH of a buffer prepared by adding 0.506 mol of the...

PART A: What is the pH of a buffer prepared by adding 0.506 mol of the weak acid HA to 0.305 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7? PART B: What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Express the pH numerically to three decimal places. PART C: What is the pH...

A- What is the pH of a buffer prepared by adding 0.405 mol of the weak...

A- What is the pH of a buffer prepared by adding 0.405 mol of the weak acid HA to 0.305 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7. Express the pH numerically to three decimal places. B- What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Express the pH numerically to three decimal places....

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Part B What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Express the pH numerically to three decimal places. Part A What is the pH of a buffer prepared by adding 0.809 mol of the weak acid HA to 0.507 mol of NaA in 2.00 L of solution? The dissociation constant K a of HA is 5.66× 10 −7 . Express the...

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Part A Calculate the change in pH that results from adding 0.190 mol NaNO2 to 1.00...

Part A Calculate the change in pH that results from adding 0.190 mol NaNO2 to 1.00 L of 0.190 M HNO2(aq). (Ka(HNO2)=7.2⋅10−4) Express your answer using two decimal places. Part B Calculate the change in pH that results from adding 0.190 NaNO3 to 1.00 L of 0.190 HNO3(aq). Express your answer using two decimal places.

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