Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter24: Coulometry
Section: Chapter Questions
Problem 24.10QAP: A 0.0712-g sample of a purified organic acid was dissolved in an alcohol-water mixture and titrated...
Related questions
Question
![Calculate the hydronium-ion concentration:
apple juice, pOH = 10.24
pH
[OH] =
а.
b.
7.45
saliva,
antacid,
с.
1.51 x 10*
2. A lamp draws a current of 2.0 A.Find the charge in coulombs used by the lamp
in 30 s.
3.
How much heat is required to raise the temperature of 10.0 g of H,O(s) from
-10°C to H,O(1) at 10°C?
What are the boiling point and freezing point of a solution prepared by dissolving
2.40g of biphenyl, (C2H10) in 75.0g of benzene, (C,H.)? The molal weight of
biphenyl is 154g/mol.
Kb for benzene = 2.53 °C/m
BPbenzene = 80.1°C
Kf for benzene = 5.12 °C/m
FPbenzene = 5.5°C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa6c002bc-fff4-4246-8680-6d3ee4f4b889%2F87987e1f-fd41-4364-a1d0-a846c1fce900%2F0jl7ie4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Calculate the hydronium-ion concentration:
apple juice, pOH = 10.24
pH
[OH] =
а.
b.
7.45
saliva,
antacid,
с.
1.51 x 10*
2. A lamp draws a current of 2.0 A.Find the charge in coulombs used by the lamp
in 30 s.
3.
How much heat is required to raise the temperature of 10.0 g of H,O(s) from
-10°C to H,O(1) at 10°C?
What are the boiling point and freezing point of a solution prepared by dissolving
2.40g of biphenyl, (C2H10) in 75.0g of benzene, (C,H.)? The molal weight of
biphenyl is 154g/mol.
Kb for benzene = 2.53 °C/m
BPbenzene = 80.1°C
Kf for benzene = 5.12 °C/m
FPbenzene = 5.5°C
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