Question

acids and bases - homework assignment
name: selvin herrandur date: 11 - 12 - 25
instructions:
answer each question in the space provided. show your reasoning where appropriate.

1. multiple choice:

which of the following is a property of acids?
a. slippery feel b. turns blue litmus red c. bitter taste d. produces oh ions

1. multiple choice:

a base can be defined as a substance that:
a. donates h+ ions b. accepts h+ ions c. produces co2 d. turns red litmus paper red

1. short answer:

what ion is responsible for the acidic properties of a solution?

1. short answer:

what ion is responsible for the basic properties of a solution?

1. true or false:

a solution with a ph of 2 is more basic than a solution with a ph of 6.

Explanation:

Question 1

Step1: Recall acid properties

Acids turn blue litmus red. Bases have a slippery feel (A is wrong), acids have a sour taste (C is wrong), and bases produce \(OH^{-}\) ions (D is wrong).

Question 2

Step1: Define base

According to Bronsted - Lowry theory, a base accepts \(H^{+}\) ions. Acids donate \(H^{+}\) ions (A is wrong), \(CO_{2}\) is not related to base definition here (C is wrong), and bases turn red litmus blue (D is wrong).

Question 3

Step1: Identify acidic ion

The \(H^{+}\) (or \(H_{3}O^{+}\)) ion is responsible for acidic properties.

Question 4

Step1: Identify basic ion

The \(OH^{-}\) ion is responsible for basic properties.

Question 5

Step1: Understand pH scale

The pH scale ranges from 0 - 14. Lower pH (0 - 7) is acidic, higher pH (7 - 14) is basic. A pH of 2 is acidic, a pH of 6 is less acidic but still acidic. So the statement is false.

Answer:

1. B. Turns blue litmus red
2. B. Accepts \(H^{+}\) ions
3. \(H^{+}\) (or \(H_{3}O^{+}\)) ion
4. \(OH^{-}\) ion
5. False