Acids/Bases, Electrochem, Orgo

According to one acid-base theory, what is an acid?

• H⁺ acceptor

• H⁻ donor

• H⁺ acceptor

• H⁺ donor

Which of the following is an Arrhenius base?

• HCl

• Ca(OH)₂

• H₃PO₄

• CH₃COOH

Which of the following is an Arrhenius acid?

• HNO₂

• NaOH

• NaBr

• NH₃

In the reaction HCl + H₂O → H₃O⁺ + Cl⁻, why is water considered a base?

• donates an H⁺

• accepts an H⁺

• donates an OH⁻

• accepts an OH⁻

What happens to H⁺ concentration when pH decreases by 1 unit?

• a tenfold decrease

• a tenfold increase

• a hundredfold increase

• a hundredfold decrease

What is the color of bromocresol green indicator at pH 2.0?

• red

• blue

• yellow

• green

Which equation shows neutralization?

• base+acid→salt+water

• base+salt→water+acid

• salt+acid→base+water

• salt+water→acid+base

How many mL of 2.5M HCl are needed to neutralize 10mL of 5.0M NaOH?

• 8

• 12

• 20

• 25

If 6mL of 1M HCl is neutralized by 3mL of KOH, what is the molarity of KOH?

• 1M

• 2M

• 3M

• 9M

In the reaction Zn + H₂O → ZnO₂ + H₂, which element is oxidized?

• Zinc

• Hydrogen

• Oxygen

• None

Tags

NGSS.HS-PS1-2