Question

Concentrated phosphoric acid is 90% H3PO4 by mass and the remaining mass is water. The molarity of H3PO4 in 90% H3PO4 is 12.2 M at room temperature. What volume (in mL) of this solution is needed to make a 1.00 L solution of a 1.00 M phosphoric acid?

Answer 1

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Answer 2

Explanation:

it will 90% -100 = 10%

therefore solution will take 2.00 M