Question

A student prepared a 1:1 buffer, for which [HAc] = [Ac-] = 0.04688 M. Using their 1:1 buffer and a 0.09926 M HCl solution, the student prepared Solution C in Part 3 of the experimental procedure. Given this information, how many moles of HCl were there in the student's Solution C before a reaction took place? Report your final answer, in moles, to 6 decimal places and only include the numerical value (no units). Do not use scientific notation to answer this question.

Answer 1

To determine how many moles of HCl were in the student's Solution C before a reaction took place, we need to know how many liters of the HCl solution were used to prepare Solution C.

Assuming that the student used a specific volume V (in litters) of the 0.09926 M HCl solution, the moles of HCl can be calculated using the formula:

\[
\text{moles of HCl} = \text{concentration of HCl} \times \text{volume of HCl solution}
\]
\[
= 0.09926 \, \text{M} \times V \, \text{L}
\]

To get the exact value, we need to know the volume in liters. If you provide the volume V used in part 3 for preparing Solution C, I can calculate the exact number of moles of HCl for you.

If no specific volume is mentioned, please clarify or provide additional information.