CHEMISTRY
2nd Edition
ISBN: 9781593995782
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Chapter 4, Problem 95E
The reaction of
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A precipitate of AgCl + AgBr weighs 0.8132 gram. On heating in a current of chlorine, the AgBr is converted into AgCl, the mixture losing 0.1450 gram in weight. What was the percentage of chlorine in the original precipitate?
A solution is prepared by dissolving 27.03 grams of FeCl3* 6H2O, and diluting to give a final volume of 400 ml. Find the molarity of ferric chloride solution. Assuming 100% ionization of ferric chloride, Find the molarity of the Fe+3 and the Cl-ions.
When in danger, bombardier beetles can fire a hot, toxic mixture of chemicals at their
attacker. This mixture contains quinone, C6H4O2, a compound that is formed by the
reaction of hydroquinone, C6H4(OH)2, with hydrogen peroxide, H2O2.
The equation for the overall reaction is:
→ CHO,
CH (OH), + H,O,
->
2(aq)
+ 2H,0,
2(aq)
2(aq)
()
ment
HCI
Use the following data to calculate the enthalpy change, in kJ mol-1, for the above reaction.
en
AH = + 177.4 kJ mol-
g bevloaaib
AH = -191-2kJ mol-
CH (OH),
CHOa4)
+ H.
2(g)
2( aq)
2( aq)
H,O
Dios H
->
2(aq)
->
20 218)
→ H,O
AH = -241-8 kJ mol!
+ ½0,
2(g)
H¸O →
H,O)
AH = -43-8 kJ mol!
Chapter 4 Solutions
CHEMISTRY
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