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Determining Ionizable H Atoms in Malonic Acid via Neutralization

Chapter 4, Problem 4.120

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QUESTION:

The molecular formula of malonic acid is \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}\). If a solution containing 0.762 g of the acid requires 12.44 mL of 1.174 M NaOH for neutralization, how many ionizable H atoms are present in the molecule?

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Determining Ionizable H Atoms in Malonic Acid via Neutralization
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Explore the process of determining ionizable hydrogen atoms in malonic acid using its molecular formula C3H4O4 and a neutralization reaction with Sodium hydroxide. Through methodical calculations involving the given mass of malonic acid and the required volume of Sodium hydroxide for neutralization we uncover that each molecule of malonic acid contains two ionizable H atoms.

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Questions & Answers

QUESTION:

The molecular formula of malonic acid is \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}\). If a solution containing 0.762 g of the acid requires 12.44 mL of 1.174 M NaOH for neutralization, how many ionizable H atoms are present in the molecule?

ANSWER:

Step 1 of 2

The goal is to find the number of ionizable H atoms, present in the molecule.

Given:

\(\begin{array}{l}\text{The molecular formula of malonic acid } =\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}\\ \text{Mass of } \mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}=0.762 \mathrm{~g}\\ \text{Volume of } \mathrm{NaOH} \text{ solution } =12.44 \mathrm{~mL}=0.01244 \mathrm{~L}\\ \text{Molarity of } \mathrm{NaOH} \text{ solution } =1.174 \mathrm{M}\end{array}\)

The number of ionizable H atoms in malonic acid can be determined by comparing the moles of NaOH to the moles of malonic acid in 0.762 g.

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