Question1) Select ALL of the following compounds that could act as a base in solution

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Question1) Select ALL of the following compounds that could act as a base in solution.

Question 1 options:

• H₃PO₄
• NH₃
• CO₂
• NaOH
• CH₃OH
• N₂
• HSO₃^-
• HCO₃^2-

 

Question 2:

 Which of the following reactions most clearly demonstrates that the substance is a modified Arrhenius base?

Select only 1 reaction.

• Al³⁺(aq) + 7 H₂O(l) ? [Al(H₂O)₅(OH)]₂⁺(aq) + H₃O⁺(aq)
• NaOH(aq) + HOCl(aq) ? NaOCl(aq) + H₂O(l)
• H₃O⁺(aq) + OH^-(aq) ? 2 H₂O(l)
• Na₂S(s) + H₂O(l) ? 2 Na⁺(aq) + HS^-(aq) + OH^-(aq)

 

Question 3:

 Nitric acid has excellent electrical conductivity as a result of its

• inability to dissociate into ions
• complete ionization in aqueous solution
• partial ionization in aqueous solution
• complete dissociation in aqueous solution

 

Question 4:

 A reaction between magnesium hydroxide and hydrochloric acid is defined as a neutralization reaction because the acid, HCl(aq):

• donates hydrogen ions to the base, magnesium hydroxide 
• is neutralized to form the base, magnesium hydroxide 
• receives hydrogen ions from the base, magnesium hydroxide
• reacts with the base, magnesium chloride

 

Question 5:

 Which of the following can act as a polyprotic base?

• K₂CO₃
• KOH
• NaOH
• NaCH₃COO