Question

Part A: What is the pH of a buffer prepared by adding 0.607 mol of the weak acid HA to 0.507 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 the buffer from Part A? Assume no volume change on the addition of the base.

Answer #1

Part A.) What is the pH of a buffer prepared by adding 0.708 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.
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 0.809 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.
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. What is the pH after 0.195 mol of NaOH is added to the buffer...

Part A What is the pH of a buffer prepared by adding 0.607 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 pH
numerically to three decimal places.
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...

What is the pH of a buffer prepared by adding 0.809 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.?
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?
What is the pH after 0.195 mol of NaOH is added to the buffer
from Part A? Assume...

Solve for pH:
A) What is the pH of a buffer prepared by adding 0.809 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...

Part A: What is the pH of a buffer prepared by adding 0.506 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. Part B: 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.

Part A:
What is the pH of a buffer prepared by adding 0.708 mol of the
weak acid HA to 0.608 mol of NaAin 2.00 L of solution? The
dissociation constant Ka of HA is 5.66×10−7.
Express the pH numerically to two decimal places.
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 two decimal...

a) What is the pH of a buffer prepared by adding 0.708 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.
Answer: pH=6.181
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.
please help me with part b, as I
already solved for part a.

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? pH = 6.423 . 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 after 0.195 mol of...

± pH Changes in Buffers
When a solution contains a weak acid and its conjugate base or a
weak base and its conjugate acid, it will be a buffer solution.
Buffers resist change in pH following the addition of acid or base.
A buffer solution prepared from a weak acid (HA) and its conjugate
base (A−) is represented as
HA(aq)⇌H+(aq)+A−(aq)
The buffer will follow Le Châtelier's principle. If acid is
added, the reaction shifts to consume the addedH+, forming more...

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