Grignards Reagents And Alkanols

Question 1

1. Grignards reagents is also called?

Answer 1

Alkyl magnesium halides

Question 2

1. Grignards reagents plus water yields?
2. Grignards reagents plus carbon dioxide yields?
3. Grignards reagents plus methanal yields?
4. Grignards reagents plus other aldehydes yields?
5. Grignards reagents plus ketones yields?
6. Grignards reagents plus ester
7. Grignards reagents plus epoxide

Answer 2

1. Alkanes
2. Carboxylic acids
3. Primary alcohol
4. Secondary alcohol
5. Tertiary alcohol
6. Tertiary alcohol
7. Primary alcohol

Question 3

1. The shape of alkanol is?
   2.

Answer 3

Tetrahedral

Question 4

State the common name of the following?
1. 2-methyl-2-propanol
2. Cyclohexanol
3. 2-propen-1-ol
4. 3-methyl-1-butanol

Answer 4

1. t-butyl alcohol
2. Cyclohexyl alcohol
3. Alkyl alcohol
4. Iso amyl alcohol

Question 5

1. When you react an alcohol with acyl halide(such as acid chloride(acyl chloride) in the presence of a base such as pyridine, the product gives what?
2. Oxidation can be stopped at the intermediate aldehydes using?

Answer 5

1. An ester
2. Pyridinium chlorochromate (PCC) or pyridinium dichromate (PDC)

Question 6

What’s the reaction for the basis of Lucas test?

Answer 6

The reaction of alcohols with HCL in the presence of ZnCl2

Question 7

The hybridization of alkanols is

Answer 7

SP³

Question 8

1. The hybridization of an aldehyde or ketone is?
2. The bond angle of an aldehyde or ketone is?

Answer 8

Sp²
120°

Question 9

Reduction of alkanals/aldehyde yields?
Oxidation of alkanals/aldehyde yields?

Oxidation of primary alcohol gives?
Oxidation of secondary alcohol gives?

Reduction of ketones give?

Answer 9

Primary alcohols
Carboxylic acids

Aldehyde/carboxylic acid
Ketones

Secondary alcohol

Question 10

The hydrogenation process in which acyl chloride is selectively reduced to an aldehyde, by employing gas over palladium poisoned by barium sulfate is known as?

Answer 10

Rosenmund Reduction

Question 11

1. Acid Chlorides can be converted to aldehyde using what?
2. Esters and nitriles can be reduced to aldehyde using?

Answer 11

Lithium tri-tert-butoxyaluminium hydride [LiAlH(Ot-Bu)3] at very low temperature (-78°C)

2. Diisobutylaluminium hydride

Question 12

1. The reaction of propene with ozone gives forms what?
2. Aldehydes can be prepared through?

Answer 12

Acetaldehyde and formaldehyde

2. (a) The oxidation of 1° alcohols
   (b) Reduction of acyl chloride, esters and nitriles
   (c) Ozonolysis of alkenes
   (d) Hydroboration of terminal alkynes

Question 13

1. Aldehyde and ketones reacts with primary amine to give
2. What can be used to distinguish between aldehydes and ketones

Answer 13

Imines

2. Tollen Reagent
   Fehlings Solution
   Where only aldehyde gives a positive reaction to the tests

Question 14

Hydroxylation of alkenes gives what?

Answer 14

Di hydric alkanol and hydrolysis of epoxides

Question 15

1. Hydration of alkynes leads to formation of ________

Answer 15

Ketones

Question 16

What catalyst is used to catalyze the hydrogenation of alkynes to alkenes, but not alkenes to alkanes

Answer 16

Lindlar catalyst

Question 17

Alkyne+ lindlar catalyst = ?
Alkyne+ Sodium in liquid ammonia=?

Answer 17

Trans alkenes

Question 18

When terminal alkynes are deprotonated by very strong bases the resulting anion is called?

Answer 18

An Acetylide ion