2. A 10.0-mL sample of pineapple juice was titrated with 0.100 M sodium hydroxide solution. The average volume of NaOHrequired to reach the endpoint was 12.8 mL.a. Calculate the number of moles of sodium hydroxide required to reach the endpoint.b. Using the mole ratio for the neutralization reaction shown in Equation 1, determine the number of moles of citric acidin 10.0 mL of pineapple juice.c. Multiply the number of moles of citric acid by its molar mass to calculate the mass of citric acid in 10.0 mL of thejuice.d. The concentration of acid in juices is usually expressed in grams of acid per 100 mL of juice. What is the concentrationof citric acid in pineapple juice?3. Write a balanced chemical equation for the neutralization reaction of (a) hydrochloric acid and (b) acetic acid with sodiumhydroxide. 4. The titration curves for hydrochloric acid and acetic acid with sodium hydroxide are shown below. Distinguish betweenthe strong and weak acid in terms of the initial pH, the pH at the equivalence point, and the overall shape of the titrationcurve.Titratlon Curve HCI + NAOHTitration Curve CH,COOH + NAOH12121010-88.442224681012468101214Volume NaOH Added (mL)Volume NaOH Added (mL)

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Write a balanced chemical equation for the neutralization reaction of (a) hydrochloric acid and (b) acetic acid with sodium hydroxide.

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

2. A 10.0-mL sample of pineapple juice was titrated with 0.100 M sodium hydroxide solution. The average volume of NaOH
required to reach the endpoint was 12.8 mL.
a. Calculate the number of moles of sodium hydroxide required to reach the endpoint.
b. Using the mole ratio for the neutralization reaction shown in Equation 1, determine the number of moles of citric acid
in 10.0 mL of pineapple juice.
c. Multiply the number of moles of citric acid by its molar mass to calculate the mass of citric acid in 10.0 mL of the
juice.
d. The concentration of acid in juices is usually expressed in grams of acid per 100 mL of juice. What is the concentration
of citric acid in pineapple juice?
3. Write a balanced chemical equation for the neutralization reaction of (a) hydrochloric acid and (b) acetic acid with sodium
hydroxide.

4. The titration curves for hydrochloric acid and acetic acid with sodium hydroxide are shown below. Distinguish between
the strong and weak acid in terms of the initial pH, the pH at the equivalence point, and the overall shape of the titration
curve.
Titratlon Curve HCI + NAOH
Titration Curve CH,COOH + NAOH
12
12
10
10-
8
8.
4
4
2
2
2
4
6
8
10
12
4
6
8
10
12
14
Volume NaOH Added (mL)
Volume NaOH Added (mL)

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