Acid Base Knowledge Challenge

Which pair of compounds represents one Arrhenius acid and one Arrhenius base?

• CH₃OH and NaOH

• CH3OH and HCl

• HNO₃ and NaOH

• HNO₃ and HCl

Which equation represents a neutralization reaction?

• 6HClO →4HCl + 2HClO₃

• CH₄ + 2O₂ →CO₂ + 2H₂O

• Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O

• Ba(OH)₂ + Cu(NO₃)₂ → Ba(NO₃)₂ + Cu(OH)₂

What produces hydrogen ions as the only positive ions in aqueous solution?

• KOH

• HBr

• NH₃

• NaCl

When the pH of a solution is changed from 4 to 3, the hydronium ion concentration of the solution

• decreases by a factor of 10

• increases by a factor of 10

• decreases by a factor of 100

• increases by a factor of 100

Which substance is always a product when an Arrhenius acid in an aqueous solution reacts with an Arrhenius base in an aqueous solution?

• HBr

• H₂O

• KBr

• KOH

Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow?

• 0.1 M HCl

• 0.1 M NH₃

• 0.1 M CH₃OH

• 0.1 M NaOH

In a titration, 5.0 mL of a 2.0 M NaOH(aq) solution exactly neutralizes 10.0 mL of an HCl(aq) solution. What is the concentration of the HCl(aq) solution?

• 1.0 M

• 2.0 M

• 10. M

• 20. M

The electrical conductivity of an aqueous solution depends on the concentration of which particles in the solution?

• molecules

• electrons

• atoms

• ions

Which substance can act as an Arrhenius base in an aqueous solution?

• LiCl

• LiNO₃

• LiBr

• LiOH

Which substance is an electrolyte?

• CH₃OH

• C₆H₁₂O₆

• H₂O

• KOH