Question

TRUE OR FALSE

Answer 1

Answer:

1. True

2. False

3.False

4.True

5. True

6. True

7.False

8.True

9. False

10. True

11. True

12. True

13. False

14. True

15. True

16. False

17.True

Explanation:

1. True. In chemical equations the OH ion is used to denote hygrogen in its aqueous state. Also, the H can be used for this as well

2. False. The Bronsted-Lowry model says that an acid is a hydrogen-ion donor.

3.False.  The pH scale go from 1 to 14

4.True. An acidic solution is a solution that contains more of hydrogen ions than hydroxide ions

5. True. Sodium Hydroxide is a base because of its OH group present.

6. True. Both acids and bases are good conductors because they can easily dissociate to release their H and OH ion in a solution.

7.False. Lemon has a low pH. This makes it  an ACID

8.True. This is the Arrhenius model

9. False. Acids taste sour while bases taste bitter

10. True. Water can only produce H and OH ions during self ionization.

11. True. Substances with pH values 1-6 are acids

12. True. percent Hydrogen and p Hydroxide ions add up to 14.

13. False. HCL is Hydrochloric Acid

14. True. The additive inverse of pH is the pOH. Acids have low pH and hence high pOH values.

15. True. Both acids and bases react with metals to liberate hydrogen gas.

16. False. Monoprotic ions only donate  one hydrogen ion.

17.True. The pH is defined mathematically as the negative logarithm of the hydrogen ion concentration

Answer 2

Answer:

1. True

2. False

3. False

4. True

5. True

6. True

7. False

8. True

9. False

10. True

11. True

12. True

13. True

14. True

15. True

16. False

17. True

Explanation:

1. True

The H⁺ ion is essentially a proton and is transferred to other H₂O molecule to form the hydronium (H₃O⁺) ion, hence, they can be used interchangeably in aqueous solutions.

2. False

A Br∅nsted-Lowry acid is a hydrogen ion or proton donor

3.  False

The pH scale go from 1 to 14

4. True

Due to the shift in the balance in the hydrogen ions concentration when an acid is dissolved in a solution, an acid contains more hydrogen ions than hydroxide ions in the solution

5. True

In an aqueous solution, NaOH dissociates to form Na⁺ and OH⁻ making it a base

6. True

Water soluble acids and bases dissociates into ions in aqueous solution and can conduct electricity

7. False

A base is a substance with a high pH

8. True

Arrhenius model of an acid states that an acid contains and ionizes to produce hydrogen ions

9. False

Due to the hydrogen ion, acids tastes sour

10. True

The reaction for the self ionization of water is as follows;

2H₂O (l) ⇄ H₃O⁺ (aq) + OH⁻ (aq)

11. True

Acids are substances with pH below 7

12. True

The sum of pH and pOH is 14

13. True

In an aqueous solution, HCl dissociates to produce hydronium (H₃O⁺) ion

14. True

pH = 14 - pOH, therefore, for a substance to have a pH below 7 (acidic), the pOH should be higher than 8

15. True

Sodium hydroxide reacts with water and zinc to produce hydrogen gas and sodium zincate

16. False

Monoprotic donate one hydrogen ion

17. True

The pH is found by taking the negative logarithm of the hydrogen ion concentration.