Interpretation:
Required volume of dilutedH3PO4 solution is to be calculated.
Concept introduction:
The equation for dilution is
Concentrated solutions of known molarities are known as stock solution.
Where,
M1 = molarity of the stock solution V1 = volume of stock solution
M2 = molarity of the diluted solution V2 = volume of diluted solution

Answer to Problem 78A
158.33 mLof 3.0 M phosphoric acid solutioncan bemadefrom95 mL 5.0 M
Explanation of Solution
Given information:
Molarity of the stock
Volume of the stock
Molarity of the diluted
Write the expression for dilution.
Volume of 3.0 M dilutedH3PO4 solution = V2
Volume of 3.0 M dilutedH3PO4 solution = 158.33 mL
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Chemistry: Matter and Change
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