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katovenus [111]
4 years ago
5

Determine the concentration of a phosphoric acid solution if a 25.00 mL sample of phosphoric acid of unknown concentration requi

res 35.77 mL of a 0.250 M NaOH solution to reach the equivalence point.
Chemistry
1 answer:
kolbaska11 [484]4 years ago
5 0

Answer: The concentration of given phosphoric acid solution is 0.357 M.

Explanation:

Given: V_{1} = 25.00 mL,    M_{1} = ?

V_{2} = 35.77 mL,            M_{2} = 0.250 M

Formula used to calculate the concentration of phosphoric acid is as follows.

M_{1}V_{1} = M_{2}V_{2}

Substitute the values into above formula as follows.

M_{1}V_{1} = M_{2}V_{2}\\M_{1} \times 25.00 mL = 0.250 M \times 35.77 mL\\M_{1} = 0.357 M

Thus, we can conclude that concentration of given phosphoric acid solution is 0.357 M.

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