Part 1: Preparation of the Primary Citric Acid Standard 1. Mass of Citric Acid: 4.05 g 2. Volume of Citric Acid Solution: 0.75 ml. (at the equivalence point) Moles of Citric Acid (Molar Mass = 192.0 g/mol) 3. Molarity of Citric Acid Solution:

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
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Problem 76PS: Vitamin C has the formula C6H8O6. Besides being an acid, it is a reducing agent. One method for...
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Part 1: Preparation of the Primary Citric Acid Standard
1.
Mass of Citric Acid: 4.05 g
2.
Volume of Citric Acid Solution: 0.75 ml (at the equivalence point)
3.
Moles of Citric Acid:
(Molar Mass = 192.0 g/mol)
4.
Molarity of Citric Acid Solution:
Part 2: Titration of the Sodium Hydroxide Solution (Show your work on
page 4)
1.
Volume of Citric Acid at the Equivalence Point
2.
Moles of Citric Acid at the Equivalence Point:
3.
Moles of NaOH at the Equivalence Point
3 NaOH + H.CaHsO, → Na:CH.O, + 3 H,O
4.
Volume of NaOH 10.0 mL
5.
Calculated Molarity of NaOH:
Do not use the dilution equation to calculate the molarity of the sodium hydroxide.
The dilution equation cannot be used when a reaction is occurring
Transcribed Image Text:Part 1: Preparation of the Primary Citric Acid Standard 1. Mass of Citric Acid: 4.05 g 2. Volume of Citric Acid Solution: 0.75 ml (at the equivalence point) 3. Moles of Citric Acid: (Molar Mass = 192.0 g/mol) 4. Molarity of Citric Acid Solution: Part 2: Titration of the Sodium Hydroxide Solution (Show your work on page 4) 1. Volume of Citric Acid at the Equivalence Point 2. Moles of Citric Acid at the Equivalence Point: 3. Moles of NaOH at the Equivalence Point 3 NaOH + H.CaHsO, → Na:CH.O, + 3 H,O 4. Volume of NaOH 10.0 mL 5. Calculated Molarity of NaOH: Do not use the dilution equation to calculate the molarity of the sodium hydroxide. The dilution equation cannot be used when a reaction is occurring
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