What is a litmus paper? What would happen when a red litmus paper is treated with a solution containing NaOH? [2 MARKS]

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Solution

Litmus paper: 1 Mark
Explanation: 1 Mark

Litmus paper is an indicator. It is used to check whether a solution is acidic or basic.
When treated with a solution containing NaOH, the color of red litmus paper will change to blue as NaOH is a base and bases turn red litmus blue.

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What would happen when a red litmus paper is treated with a solution containing NaOH? [2 MARKS]

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What happens when [5 MARKS]

a) A red litmus paper is dipped in a solution of calcium hydroxide.

b) A red litmus paper is dipped in a solution of sodium chloride.

c) A blue litmus paper is dipped in lemon juice.

d) A red litmus paper is dipped in distilled water.

e) A solution of sodium hydroxide is added to turmeric.

Question 3:

What happens to Red litmus paper when added to acid and base solution?

What would you observe when :

(a) blue litmus is introduced into a solution of hydrogen chloride gas,

(b) red litmus paper is introduced into a solution of ammonia in water,

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