The pH of the solution with dissolved salts is to be predicted. Concept introduction: Salt is a strong electrolyte that dissociates completely when added to water. When a salt contains a cation that comes from a weak base then the cation recombines with water to produce a weak base and hydronium ions, and forms an acidic solution. When a salt contains an anion that comes from a weak acid then the anion recombines with water to produce a weak acid and hydroxide ions, and forms a basic solution. The anion, if it comes from a strong acid, does not recombine and is present in the solution as a free ion without having any effect on the pH of the solution. The cations that are highly charged and have a small size will form acidic solutions. The cations from group 1A and selective cations of group 2A, along with the ones from strong bases will form a neutral solution.
The pH of the solution with dissolved salts is to be predicted. Concept introduction: Salt is a strong electrolyte that dissociates completely when added to water. When a salt contains a cation that comes from a weak base then the cation recombines with water to produce a weak base and hydronium ions, and forms an acidic solution. When a salt contains an anion that comes from a weak acid then the anion recombines with water to produce a weak acid and hydroxide ions, and forms a basic solution. The anion, if it comes from a strong acid, does not recombine and is present in the solution as a free ion without having any effect on the pH of the solution. The cations that are highly charged and have a small size will form acidic solutions. The cations from group 1A and selective cations of group 2A, along with the ones from strong bases will form a neutral solution.
Solution Summary: The author explains that the pH of the solution with dissolved salts is to be predicted.
The pH of the solution with dissolved salts is to be predicted.
Concept introduction:
Salt is a strong electrolyte that dissociates completely when added to water.
When a salt contains a cation that comes from a weak base then the cation recombines with water to produce a weak base and hydronium ions, and forms an acidic solution.
When a salt contains an anion that comes from a weak acid then the anion recombines with water to produce a weak acid and hydroxide ions, and forms a basic solution.
The anion, if it comes from a strong acid, does not recombine and is present in the solution as a free ion without having any effect on the pH of the solution.
The cations that are highly charged and have a small size will form acidic solutions.
The cations from group 1A and selective cations of group 2A, along with the ones from strong bases will form a neutral solution.
Predict the major organic product(s) of the following reactions. Indicate which of the following mechanisms is in operation: SN1, SN2, E1, or E2.
(c)
(4pts)
Mechanism:
heat
(E1)
CH3OH
+
1.5pts each
_E1 _ (1pt)
Br
CH3OH
(d)
(4pts)
Mechanism:
SN1
(1pt)
(e)
(3pts)
1111 I
H
10
Ill!!
H
LDA
THF (solvent)
Mechanism: E2
(1pt)
NC
(f)
Bri!!!!!
CH3
NaCN
(3pts)
acetone
Mechanism: SN2
(1pt)
(SN1)
-OCH3
OCH3
1.5pts each
2pts for either product
1pt if incorrect
stereochemistry
H
Br
(g)
“,、
(3pts)
H
CH3OH
+21
Mechanism:
SN2
(1pt)
H
CH3
2pts
1pt if incorrect
stereochemistry
H
2pts
1pt if incorrect
stereochemistry
A mixture of butyl acrylate and 4'-chloropropiophenone has been taken for proton NMR analysis. Based on this proton NMR, determine the relative percentage of each compound in the mixture
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