chapter 13 chemestry

Which of these substances is represented in the diagram?

• A weak acid

• a strong acid

• A strong Base

• A Salt

• a weak base

The formula of the hydronium ion is _____.

• OH⁻ 

• H₄O⁺

• H₃O⁻

• H₃O⁺

• OH⁺

Which of the following bases is used as a common floor and window cleaner?

• Ammonia

• Sodium carbonate

• Magnesium hydroxide

• Calcium carbonate

• backing soda

Which of these acids is found in stomach acid?

•  

  Malic acid

• Hydrochloric acid

• Phosphoric acid

• Acetic acid

• Lactic acid

Which of these represents the average pH of ordinary rainwater?

• 1.0

• 2.8

• 3.5

• 5.6

• 7.0

When an base ionizes in water, the number of hydrogen ions in the solutions __________ and the value of the pH _____________.

• increases, decreases

• increases, increases

• decreases, decreases

• decreases, increases

Strong acids are _____.

• acids that accept protons

• acids that are concentrated

• acids that have a very high pH

• acids that dissociate 100% into ions

• acids that dissociate very little into ions

Which of these substances is a strong acid?

• H₂CO₃

• HCN

• HCl

• H₂PO₃

• HNO₂

Which of these gases combine(s) with water to form acid rain?

I.SO₂

II.NO₂

III.H₂

IV.N₂

V.Cl₂

• I only

• II only

• I and II

• I and IV

• I, III, and V

Which of these substances has the highest pH?

• CH₃COOH

• NaOH

• HCOOH

• NH₃

• HNO₃