Organic Reagents

Question 1

What is the reagent used in the reaction of alkenes to form alcohols?

Answer 1

Water (H2O) in the presence of an acid catalyst.

Question 2

True or False: Catalysts are consumed in a chemical reaction.

Answer 2

False

Question 3

Which catalyst is used in the Haber process?

Answer 3

Iron (Fe)

Question 4

What conditions are required for the catalytic converter reaction?

Answer 4

High temperature and pressure.

Question 5

What is the reagent used to oxidize primary alcohols to aldehydes?

Answer 5

Potassium dichromate (K2Cr2O7) in dilute sulfuric acid.

Question 6

True or False: The presence of a catalyst lowers the activation energy of a reaction.

Answer 6

True

Question 7

What is the reagent used to convert an alkyl halide to an alcohol?

Answer 7

Sodium hydroxide (NaOH)

Question 8

What conditions favor the formation of ammonia in the Haber process?

Answer 8

High pressure and moderate temperature.

Question 9

Which reagent is used in the reduction of ketones?

Answer 9

Lithium aluminium hydride (LiAlH4)

Question 10

What is the catalyst used in the dehydration of alcohols?

Answer 10

Concentrated sulfuric acid (H2SO4)

Question 11

True or False: The reaction between sodium carbonate and hydrochloric acid produces carbon dioxide.

Answer 11

True

Question 12

What reagent is used in the addition of hydrogen cyanide to carbonyl compounds?

Answer 12

Potassium or sodium cyanide (KCN/NaCN)

Question 13

What type of reaction occurs when an alkene reacts with hydrogen bromide?

Answer 13

Electrophilic addition

Question 14

Fill in the blank: The catalyst used in the oxidation of alcohols to carboxylic acids is __________.

Answer 14

Potassium dichromate (K2Cr2O7)

Question 15

What is the reagent used to hydrolyze an ester?

Answer 15

Water (H2O) in the presence of an acid or base.

Question 16

What conditions are necessary for the polymerization of alkenes?

Answer 16

High temperature and pressure.

Question 17

Which reagent is commonly used to test for aldehydes?

Answer 17

Tollens’ reagent (Ag(NH3)2+)

Question 18

What is the product of the reaction between an alcohol and an acid anhydride?

Answer 18

Ester

Question 19

True or False: Enzymes are biological catalysts that speed up chemical reactions.

Answer 19

True

Question 20

What reagent is used to convert a primary alcohol to a carboxylic acid?

Answer 20

Potassium dichromate (K2Cr2O7) in dilute sulfuric acid.

Question 21

What is the catalyst used in the process of cracking hydrocarbons?

Answer 21

Silica-alumina

Question 22

Fill in the blank: The addition of water to an alkene in the presence of acid is called __________.

Answer 22

Hydration

Question 23

What conditions are required for the formation of esters from acids and alcohols?

Answer 23

Heat and an acid catalyst.

Question 24

Which reagent is used for the reduction of carboxylic acids to alcohols?

Answer 24

Lithium aluminium hydride (LiAlH4)

Question 25

True or False: A catalyst increases the rate of a reaction by providing an alternative pathway with a lower activation energy.

Answer 25

True

Question 26

What reagent is used in the hydrolysis of amides?

Answer 26

Water (H2O) in the presence of an acid or base.

Question 27

Fill in the blank: The process of breaking down larger hydrocarbons into smaller ones is known as __________.

Answer 27

Cracking

Question 28

What is the reagent used in the saponification of fats?

Answer 28

Sodium hydroxide (NaOH)

Question 29

What conditions are required for the reaction of a metal with an acid?

Answer 29

Room temperature or slightly elevated temperature.

Question 30

Which reagent is used to convert nitriles to carboxylic acids?

Answer 30

Hydrolysis with water and acid.

Question 31

What is the catalyst used in the conversion of alkenes to alcohols via hydration?

Answer 31

Acid catalyst (e.g., sulfuric acid).

Question 32

What is the reagent used in the electrophilic substitution of benzene?

Answer 32

Bromine (Br2) with FeBr3 or AlBr3

Question 33

What reagent is used to convert phenols to aryl ethers?

Answer 33

Alkyl halides in the presence of a base.

Question 34

Which reagent is used in the formation of a Grignard reagent?

Answer 34

Alkyl halide and magnesium (Mg) in dry ether.