Skip to content
OtisamLMS
Sign in Sign up
Chemistry

Chemistry · Quick practice · answer shown after each question

Acids, bases, salts, redox

Question 1 of 10

Question 1 of 10

How many faradays are needed to deposit 1 mol of copper from Cu²⁺ ions?

Question 2 of 10

Question 2 of 10

The gas produced at the cathode during electrolysis of dilute sulphuric acid is

Question 3 of 10

Question 3 of 10

An acid salt is formed when

Question 4 of 10

Question 4 of 10

The pH of a neutral solution at 25 °C is

Question 5 of 10

Question 5 of 10

How many coulombs are needed to liberate 1.12 dm³ of hydrogen at s.t.p.? (F = 96,500 C)

Question 6 of 10

Question 6 of 10

The oxidation number of Mn in KMnO₄ is

Question 7 of 10

Question 7 of 10

In the electrolysis of copper(II) sulphate with copper electrodes, the anode

Question 8 of 10

Question 8 of 10

An acid reacts with a carbonate to give a salt, water and

Question 9 of 10

Question 9 of 10

The oxidation number of Mn in KMnO4 is

Question 10 of 10

Question 10 of 10

During electrolysis of brine, the product at the anode is

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.