Problem: If the pKa of HCHO2 is 3.74 and the pH of an HCHO 2/NaCHO2 solution is 3.89, which of the following is true?A) [HCHO2] < [NaCHO2]B) [HCHO2] > [NaCHO2]C) [HCHO2] = [NaCHO2]D) [HCHO2] >> [NaCHO2]E) It is not possible to make a buffer of this pH from HCHO 2 and NaCHO2

🤓 Based on our data, we think this question is relevant for Professor Ishchuk's class at Sacramento City College.

For this problem, we have to check which among the statements are true regarding a HCHO₂/NaCHO₂buffer

Recall the Henderson-Hasselbalch equation:

$pH = {pK}_{a} + \log (\frac{conjugate base}{weak acid})$

Using this particular equation, we can calculate or estimate pH by getting the pka and ratio of the concentration of the c.base (NaCHO₂) and the weak acid (HCHO₂)

If the pK_a of HCHO₂ is 3.74 and the pH of an HCHO ₂/NaCHO₂ solution is 3.89, which of the following is true?

A) [HCHO₂] < [NaCHO₂]

B) [HCHO₂] > [NaCHO₂]

C) [HCHO₂] = [NaCHO₂]

D) [HCHO₂] >> [NaCHO₂]

E) It is not possible to make a buffer of this pH from HCHO ₂ and NaCHO₂

Problem: If the pKa of HCHO2 is 3.74 and the pH of an HCHO 2/NaCHO2 solution is 3.89, which of the following is true?A) [HCHO2] &lt; [NaCHO2]B) [HCHO2] &gt; [NaCHO2]C) [HCHO2] = [NaCHO2]D) [HCHO2] &gt;&gt; [NaCHO2]E) It is not possible to make a buffer of this pH from HCHO 2 and NaCHO2