Acid Base Properties and pH (H)

Match

• Base

• OH-

• Salt

• NaCl

• Acid

• H+

Match the following that describe the pH of different kinds of solutions

• base

• lower than 7

• acid

• 7

• neutral

• higher than 7

Bases, also known as ​ (a)   will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• alkali and OH-
• blue
• above 7
• bitter
• below 7
• H+
• red
• sour

Acids, also known as ​ (a)   , will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• H+
• red
• below 7
• sour
• bitter
• above 7
• blue

Which gas is produced when acids corrode (react with) metals?

• Oxygen

• Helium

• Hydrogen

• Hydroxide

A solution is an acid if it has more...

• H⁺ ions

• H^- ions

• OH⁺ ions

• OH^- ions

A solution is a base if it has more...

• H+ ions

• H^- ions

• OH⁺ ions

• OH^- ions

What is the conjugate acid in the following equation?

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

What is the conjugate base in the following reaction?

• HCO₃^- 
• HCl
•  H₂CO₃ 
• ^Cl-

Which of the following correctly identifies an acid-base pair?

• HCl, NaOH

• H₂CO₃ , CO₃^2-

• H₃O⁺ , OH^-

• NH₃, NH₄⁺