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cragajjar2
04.03.2020 •
Chemistry
Uppose you perform a titration of an unknown weak acid solution. You start with 4.00 mL of the weak acid and find that it takes 12.8 mL of 0.0500 M NaOH to reach the equivalence point. What is the concentration of the unknown weak acid solution?
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Ответ:
Explanation:
It is known that at the equivalence point,
Equivalent of acid = equivalent of base ......... (A)
and, Equivalent =![\text{Molarity} \times n_{f} \times V](/tpl/images/0533/7007/7b4f3.png)
Therefore, equivalent of acid is calculated as follows.
Equivalent of acid =
.......... (1)
Equivalent of base =
............ (2)
Hence, using equation (A) we will calculate the concentration as follows.
M = 0.16 M
Thus, we can conclude that concentration of the unknown weak acid solution 0.16 M.
Ответ:
% is best for pie chart
explanation: