Acids, bases and salts - Jamb Chemistry Past Questions and Answers

Question 166:

• JAMB 2016

In a neutralization reaction involving HCI and NaOH using litmus as indicator, the colour at the end point is

A. Blue
B. Red
C. Orange
D. Purple

Question 167:

• JAMB 2016

MnO\(_4\)(aq) + Y + 5Fe\(^{2+}\) (aq) \(\mapsto\) Mn\(^{2+}\) (aq) + 5Fe\(^{3+}\) (aq) + 4H\(_2\)O (l).
In the equation above, Y is

A. 10H⁺_(aq)
B. 5H⁺_(aq)
C. 8H⁺_(aq)
D. 4H⁺_(aq)

Question 168:

• JAMB 2016

The curve depicts titration between

A. Strong acid and strong base
B. Strong acid and weak base
C. Weak acid and weak base
D. Weak acid and strong base

Question 169:

• JAMB 2017

A sample of orange juice is found to have a PH of 3.80. What is the concentration of the hydroxide ion in the juice?

A. 1.6 \(\times\) 10^-4
B. 6.3 \(\times\) 10^-11
C. 6.3 \(\times\) 10^-4
D. 1.6 \(\times\) 10^-11

Question 170:

• JAMB 2017

The salt formed from a weak acid and a strong base hydrolyzes in water to form

A. A saturated solution
B. An acidic solution
C. A buffer solution
D. An alkaline solution