Question

9. To correctly adjust the pH of a solution to be used in an electrophoretic separation procedure, exactly 78.62 mL of 1.209 M NaOH were added to 100.00 mL of 1.418 M lactic acid (HLac). HLac + NaOH \rightarrow NaLac + H$_2$O Please answer the following questions. A Determine the equilibrium concentration of lactic acid in the buffer solution. M Please provider your answer below. $ \Box \Box^2 \Box_2 \leftarrow \rightarrow \leftrightarrow \leftarrow \$ $ $ \Box $ $ \Delta $ Check answer B. Determine the equilibrium concentration of NaLac in the buffer solution. M Please provider your answer below. $ \Box \Box^2 \Box_2 \leftarrow \rightarrow \leftrightarrow \leftarrow \$ $ $ \Box $ $ \Delta $ Check answer C. Given that $K_a = 1.403 \times 10^{-4}$ for lactic acid, determine the pH of the buffer solution. $pH = $

          9.
To correctly adjust the pH of a solution
to be used in an electrophoretic separation
procedure, exactly 78.62 mL of 1.209 M NaOH were
added to 100.00 mL of 1.418 M lactic acid (HLac).
HLac + NaOH \rightarrow NaLac + H$_2$O
Please answer the following questions.
A
Determine the equilibrium concentration
of lactic acid in the buffer solution.
M
Please provider your answer below.
\(
\Box
\Box^2
\Box_2
\leftarrow
\rightarrow
\leftrightarrow
\leftarrow
\$
\)
\(
\Box
\)
\(
\Delta
\)
Check answer
B.
Determine the equilibrium concentration
of NaLac in the buffer solution.
M
Please provider your answer below.
\(
\Box
\Box^2
\Box_2
\leftarrow
\rightarrow
\leftrightarrow
\leftarrow
\$
\)
\(
\Box
\)
\(
\Delta
\)
Check answer
C.
Given that $K_a = 1.403 \times 10^{-4}$ for lactic
acid, determine the pH of the buffer solution.
$pH = $

9.
To correctly adjust the pH of a solution
to be used in an electrophoretic separation
procedure, exactly 78.62 mL of 1.209 M NaOH were
added to 100.00 mL of 1.418 M lactic acid (HLac).
HLac + NaOH →NaLac + H2O
Please answer the following questions.
A
Determine the equilibrium concentration
of lactic acid in the buffer solution.
M
Please provider your answer below.
^2
2
←→↔←$

Δ
Check answer
B.
Determine the equilibrium concentration
of NaLac in the buffer solution.
M
Please provider your answer below.
^2
2
←→↔←$

Δ
Check answer
C.
Given that Ka = 1.403 × 10^-4 for lactic
acid, determine the pH of the buffer solution.
pH =

Added by Rocio H.

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