15.1 Introducing Acids and Bases

A bronsted lowry base

• produces hydroxide ions in a solution

• is a proton donor

• produces hydrogen ions in a solution

• is a proton acceptor

Identify the true statement about the following reaction:

F^- + H₂O --> HF +OH^-

• H₂O is a bronsted lowry base

• H₂O is not an acid or base according to either model

• H₂O is a bronsted lowry acid

• H₂O is an arrhenius acid

Acid-base conjugate pairs differ by a single

• Electron

• Proton

• Neutron

• Oxygen

Which of the following show an acid and its conjugate base pair (in that order)

• H₂SO₄, SO₄^2-

• OH^-, H₂O

• NH₄⁺, H₂O

• H₂CO₃, HCO₃^-

Could C₂H₃O₂^- act as a base when placed in water?

• Yes, because it can accept a H⁺

• Yes, because it can donate a H⁺

• No, because it cannot donate a H⁺

• No, because it cannot accept a H⁺

Is this acid monoprotic, diprotic or triprotic

Benzoic acid C₆H₅COOH

• Monoprotic acid

• Diprotic acid

• Triprotic acid

• Not an acid

Is this acid monoprotic, diprotic or triprotic

Citric acid C₆H₈O₇ or COOHCH2COH(COOH)CH2COOH

Systematic name 2-Hydroxypropane-1,2,3-tricarboxylic acid

• Monoprotic acid

• Diprotic acid

• Triprotic acid

• Not an acid

Which is an example of an amphiprotic species?

• Al2O3

• CO32−

• P4O10

• HPO42−

Which of the following acids can be classified as

polyprotic in water?

I - CH₃COOH

II - H₂SO₃

III - NH₄⁺

• I only

• II only

• I and II only

• I, II and III

What is the conjugate base in the following reaction?

• HCO₃^- 
• HCl
•  H₂CO₃ 
• ^Cl-