Question

Four different chemicals named P, Q, R, S were taken in different beakers. Into each beaker 10 ml of water was added. Analyse the given chart and identify the strong acid and the weak base. *
A. Strong Acid : Chemical P , Weak Base: Chemical Q
B. Strong Acid : Chemical Q , Weak Base: ChemicalS
C. Strong Acid : Chemical S , Weak Base: Chemical Q
D. Strong Acid : Chemical R , Weak Base: Chemical P

Answer 1

Answer :-

C. Strong acid : Chemical S ; Weak Base : Chemical Q

Explanation :-

Firstly in the given graph, chemical P and S are acids as they furnish H⁺ ions on being dissolving in water whereas Q and R are bases as they give rise to OH⁻ ions.

Strong acids :- Acids, that give rise to more H⁺ ions are called as strong acids .

Weak bases :- Bases, that give rise to less OH⁻ ions are known as weak bases.

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By properly analyzing the graph, we can conclude that :-

• As chemical S furnishes more H⁺ ions than P, so (S) is a strong acid .

• Chemical (Q) is a weak base, as it gives rise to less OH⁻ ions than chemical (R) .