How many mL of 3.000 M NaOH solution are needed to react with 2.000 g H3PO4 ?  The molar mass of H3PO4 is 97.98 g.   H3PO4   +   3 NaOH →   3 H2O   +  Na3PO4 This is a titration problem, and we are given enough information to calculate the moles of the acid.

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Q: #41

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.