Charge on cation

• positive

• negative

• neutral / no charge

Charge on anion

• positive

• negative

• neutral / no charge

Charge on NH₃

• positive

• negative

• neutral / no charge

Which is correct for the reaction between Zn²⁺ and 2 drops of NaOH solution?

• Zn²⁺(aq) + 2OH^-(aq) → Zn(OH)₂(aq)

• Zn²⁺(aq) + OH^-(aq) → Zn(OH)₂(s)

• Zn²⁺(aq) + 2NaOH(aq) → Zn(OH)₂(s)

• Zn²⁺(aq) + 2OH^-(aq) → Zn(OH)₂(s)

Which is correct for the reaction between Al³⁺ and excess NaOH solution?

• Al³⁺(aq) + 3OH^-(aq) →Al(OH)₃(aq)

• Al³⁺(aq) + 3OH^-(aq) →Al(OH)₃(s)

• Al³⁺(aq) + 4OH^-(aq) → [Al(OH)₄]^-(aq)

• Al³⁺(aq) + 4OH^-(aq) → [Al(OH)₄]⁺(aq)

Which of the following does NOT form a complex ion with NH₃ solution?

• Cu²⁺(aq)

• Al³⁺(aq)

• Zn²⁺(aq)

• Ag⁺(aq)

Which of the following forms a complex ion with excess NaOH solution?

• Cu²⁺(aq)

• Fe³⁺(aq)

• Pb²⁺(aq)

• Ag⁺(aq)

Name the precipitate formed between Ba²⁺(aq) and 2 drops of sulfuric acid

• barium sulfate

• beryllium sulfate

• barium hydrogen sulfate

• barium hydroxide

Name the precipitate formed between Pb²⁺(aq) and 2 drops of ammonia solution

• lead ammonium

• lead sulfate

• lead hydroxide

• none of these

What is the formula of the complex ion formed when silver chloride precipitate dissolves in excess NH₃ solution?

• [Ag(OH)₂]^-(aq)

• [Ag(NH₃)₄]²⁺(aq)

• [Ag(NH₃)₂]⁺(aq)

• [Ag(NH₃)₂]⁺(s)