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BC Lab Module 1 pH Measurement, Buffer Preparation

Total questions: 25

Worksheet time: 18mins

Name
Class
Date
1.

it compares the acidity or alkalinity of a solution in a given temperature.

a)

pH

b)

Buffer Capacity

c)

Acid

d)

Base

2.

pH solution can be measured

a)

pH Paper

b)

pH Meter

c)

pH Sound Wave

d)

pH Electrowave

3.

pH indicator is color RED

a)

Acidic

b)

Neutral

c)

Base

d)

Alkali

4.

pH indicator is color GREEN

a)

Neutral

b)

Acid

c)

Base

d)

Alkali

5.

pH indicator is color PURPLE

a)

Base

b)

Alkali

c)

Neutral

d)

Acid

6.

Hydrogen Ion activity Increase

a)

Acid

b)

Neutral

c)

Base

7.

Activity of Hydrogen and Hydroxide are equal

a)

Neutral

b)

Acid

c)

Alkali

8.

The Activity of hydroxide is greater than hydrogen ion

a)

Alkali

b)

Acid

c)

Neutral

9.

ACID is any species that can increase the concentration of H+ ions (protons) in an aqueous solution

a)

Arrhenius Theory

b)

Bronsted Lowry Theory

c)

Lewis Theory

10.

BASE is any species that can increase the concentration of OH– in an aqueous solution

a)

Arrhenius Theory

b)

Bronsted Lowry Theory

c)

Lewis Theory

11.

ACID is any species that can donate a proton

a)

Bronsted Lowry Theory

b)

Arrhenius Theory

c)

Lewis Theory

12.

BASE is any species that can accept a proton

a)

Bronsted Lowry Theory

b)

Arrhenius Theory

c)

Lowry Theory

13.

a species formed after the base accepts a proton.

a)

Conjugate Acid

b)

Conjugate Base

c)

Acid

d)

Base

14.

is the species formed after an acid donates its proton

a)

Conjugate Base

b)

Conjugate Acid

c)

Acid

d)

Base

15.

ACID is a species that can accept a pair of non-bonding electrons

a)

Lewis Theory

b)

Bronsted Lowry Theory

c)

Arrhenius Theory

16.

BASE is a species that can donate a pair of non-bonding electrons

a)

Arrhenius Theory

b)

Lewis Theory

c)

Bronsted Lowry Theory

17.

Find the pH of a 3.16 X 10 ^ -12 M HCl solution.

(a)  

18.

The [H+] of 0.1 M barbituric acid was found to be 3.98 X 10 ^ -8 M. What is the pH of the solution?

(a)  

19.

. If the pH of the solution is 3.25 , what would be the [H+]?

(a)  

20.

A solution has a pOH of 3. What is the pH of this solution?

(a)  

21.

What is the [OH–] of a solution if it has a pOH of 2.49?

(a)  

22.

What is the pKa of acetic acid, if Ka for acetic acid is 1.78 x 10-5?

(a)  

23.

What is the pKb for methyl amine, if the value of Kb for methyl amine is 4.4 x 10-4?

(a)  

24.

Calculate the value of the ionization constant for the ammonium ion, Ka, if the pKa is 8.74.

(a)  

25.

9. Calculate the value of the ionization constant, Kb, for aniline if the pKb is 7.36

(a)