WAEC Chemistry Past Questions & Answers - Page 183

911.

Consider the reaction represented by the equation below, xNH3(g) + yCI2(g) → zHCI(g) + N2(g) The values of x,y and z are respectively

A.

2, 4, 6

B.

3, 2, 4

C.

2, 3, 6

D.

3, 2 6

Correct answer is C

No explanation has been provided for this answer.

912.

A salt that absorbs moisture from the atmosphere without forming a solution is said to be

A.

efflorescent

B.

deliquescent

C.

hygroscopic

D.

insoluble

Correct answer is C

No explanation has been provided for this answer.

913.

What process is involved in the reaction represented by the following equation? AICI3 + 3H2O(l) → AI(OH) 3(s) + 3HCI(g)

A.

dehydration

B.

hydrolysis

C.

double decomposition

D.

Neutralization

Correct answer is B

No explanation has been provided for this answer.

914.

NaHCO3(s) can be distinguished from Na2CO3(s) by the action of

A.

dilute hydrochloric acid

B.

carbon (IV) oxide

C.

aqueous ammonia

D.

heat

Correct answer is D

No explanation has been provided for this answer.

915.

Which of the following is not an acid anhydride?

A.

P 2O 5

B.

NO 2

C.

SO 2

D.

CO

Correct answer is D

No explanation has been provided for this answer.