Question

Which substances are acids? Check all that apply.

1; AgOH


2; HF


3; NiOOH


4;NH4OH


5; HMnO4


6; Zn(OH)2

Answer 1

Only HF and HMnO₄ are acids and all others are base.

When the given substances are put in water, they break apart to give H⁺ or OH⁻ ions. Only HF and HMnO₄ will give H⁺ ions and others will give OH⁻ ions. It is these ions which give a substance its acidic or basic nature. All the substances that give H⁺ ions are acidic in nature. The others that give OH⁻ ions are basic in nature.

Answer 2

your answer is HF and HMnO₄