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Example Questions
Example Question #141 : Reactions And Equilibrium
Calculate the equilibrium constant for given the following information:
Example Question #3 : Properties Of The Equilibrium Constant
Calculate the equilibrium constant for given the following information:
Example Question #1 : Calculating The Equilibrium Concentrations
Consider formation of Nitrogen monoxide: with
. If the initial concentration of N2 was 0.085M and O2 was 0.038 M, what is the concentration of nitrogen monoxide at equilibrium?
3.2 x 10-8 M
1.1 x 10-4 M
1.2 x 10-6 M
1.1 x 10-3 M
1.2 x 10-5 M
1.2 x 10-5 M
Example Question #51 : Chemical Equilibrium
Given the ICE table below, what are the signs on the terms that would appear in the “Change” row?
-x, -x, +x
+x, +4x, -x
+x, +x, +x
+x, +2x, +x
-x, -2x, +x
-x, -2x, +x
Based on the balanced equation, one would use -x, -2x, and +x.
Example Question #142 : Reactions And Equilibrium
Find the equilibrium concentrations for C in the following chemical reaction: A + B -> 2C
K = 9.0 x 10-8
3.0 x 10-3 M
1.2 x 10-2 M
0.12 M
1.5 x 10-4 M
1.1 M
1.5 x 10-4 M
Example Question #143 : Reactions And Equilibrium
What is the equilibrium concentration for A- in the following reaction if the starting concentration of HA is 0.60 M?
2.3 x 10-3 M
2.3 x 10-4 M
3.5 x 10-3 M
1.2 M
1.2 x 10-5 M
3.5 x 10-3 M
Example Question #3 : Calculating The Equilibrium Concentrations
What is the equilibrium concentration for A- in the following reaction if the starting concentration of HA is 0.30 M?
2.1 M
3.9 x 10-5 M
1.5 x 10-3 M
1.5 x 10-4 M
2.1 x 10-3 M
3.9 x 10-5 M
Example Question #84 : Reaction Types
Put the following acids in order of their INCREASING acid strength: HI, HCl, HBr, HF.
HF, HBR, HI, HCl
HI, HCl, HBr, HF
HI, HBr, HCl, HF
HCl, HBr, HI, HF
HF, HCl, HBr, HI
HF, HCl, HBr, HI
Larger halogen size leads to greater acidity because of weaker H-X interactions.
Example Question #85 : Reaction Types
Put the following acids in order of their INCREASING acid strength: HCl, HS, HBr, H2Se.
H2Se, HBr, HS, HCl
H2S, H2Se, HCl, HBr
HBr, H2Se, HCl, H2S
HCl, HS, HBr, H2Se
H2S, HCl, HBr, H2Se
H2S, H2Se, HCl, HBr
Acid strength increases from left to right across a period and increases going down a group.
Example Question #86 : Reaction Types
Put the following acids in order of their DECREASING acid strength: HOCl, HOBr, HOI, H2O.
H2O, HOI, HOBr, HOCl
HOCl, H2O, HOBr, HOI
HOCl, HOBr, HOI, H2O
HOI, HOBr, HOCl, H2O
H2O, HOCl, HOBr, HOI
HOCl, HOBr, HOI, H2O
Acid strength of an oxy acid increases with increasing electronegativity on the halogen.
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