CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Question
Chapter 10, Problem 10.24CP
Interpretation Introduction
Interpretation:
The reading for pressure of the gas in the bulb needs to be determined.
Concept introduction:
The manometric unit of presusre is mm Hg. It is defined as extra pressure that is generated by the column of mercury wich is 1 mm high and it is equal to 133.322 pascals. It is not the SI unit of pressure. The reading from a mercury column can be converted into other units of pressure by multiplying the height difference between two mercury levels by denisty of the mercury and gravitational acceleration.
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Calculating the pH at equivalence of a titration
A chemist titrates 210.0 mL of a 0.1003 M hydrobromic acid (HBr) solution with 0.7550M KOH solution at 25 °C. Calculate the pH at equivalence.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH = ]
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Do you do chemistry assignments
Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
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1
Chapter 10 Solutions
CHEMISTRY-TEXT
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