CHEM Unit 10 Review

According to which theory is a base a substance which produces OH- ions in water?

• Arrhenius
• Bronsted-Lowry
• Lewis

According to Bronsted-Lowry acid base theory, an acid is a.....

• Proton donor
• Proton acceptor
• Produces H+ when added to water
• Made of H+

According to Lewis acid-base theory, a Lewis base is.....

• an electron pair acceptor
• an electron pair donor
• an oxidising agent
• a reducing agent

Which reactant in the following equation is a Bronsted acid?

• ammonium
• ammonia
• hydroxide
• water

What is the conjugate acid in the following equation?

• PO₄^3- 
• HNO₃ 
• NO₃^- 
• HPO₄^2-
  

CO₃^2-(aq)+H₂O(l)      →              HCO₃^-(aq)+OH^-(aq)
Using the above reaction, which compound is the conjugate base?

• CO₃^2-
• H₂O
• HCO₃^-
• OH^-

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

A pH of 3 is how many times more acidic than a pH of 5?

• 2

• 20

• 10

• 100

On the pH scale higher numbers indicate

• acids
• bases