
CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Question
Chapter 15, Problem 15.50CP
(a)
Interpretation Introduction
Interpretation:
The balanced chemical equation should be identified.
Concept introduction:
Equilibrium is the condition at which the rate of formation of product is equal to the rate of disappearance of reactant. It is not having an effect on its equilibrium even with the catalyst.
(b)
Interpretation Introduction
Interpretation:
The change in number of A molecule should be identified for the following:
- Increase in temperature
- Decrease in volume
- Adding inert gas
- Adding catalyst
Concept introduction:
The exothermic reaction proceeds to give the product at a lower temperature and as much as the temperature is decreased, it yields more product.
Volume is directly proportional to temperature as follows:
P is the pressure
V is volume
T is temperature
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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)
?
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1
Chapter 15 Solutions
CHEMISTRY-TEXT
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