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GradepH scale

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What does pH stand for? What does a pH scale indicate?

What is the pH optimum for pepsin

A.$2$

B.$4$

C.$6$

D.$8$

A.$2$

B.$4$

C.$6$

D.$8$

What is the pH value of base?

A.\[>7\]

B.\[<7\]

C.\[=7\]

D.None of these.

A.\[>7\]

B.\[<7\]

C.\[=7\]

D.None of these.

Write the $pH$ value of the

1. Saliva (before meal)

2. Saliva (after meal)

3. Lemon juice

4. Colourless aerated drink

5. Carrot juice

6. Coffee

7. Tomato juice

8. Tap water

1. Saliva (before meal)

2. Saliva (after meal)

3. Lemon juice

4. Colourless aerated drink

5. Carrot juice

6. Coffee

7. Tomato juice

8. Tap water

Why $KCl$ used in pH meters?

How does the pH Scale Measure Acidity?

Explain what is the definition of $pH$ with the help of examples and the equation that is used for calculating it.

I. The pH of 1M NaOH is 13.

II. ${\text{pH + pOH = 14}}$.

a.) Statement I is true, Statement II is true and is a correct explanation of the phenomena described in I.

b.) Statement I is true; Statement II is false.

c.) Statement I is false; Statement II is true.

d.) Statement I is false; Statement II is false.

II. ${\text{pH + pOH = 14}}$.

a.) Statement I is true, Statement II is true and is a correct explanation of the phenomena described in I.

b.) Statement I is true; Statement II is false.

c.) Statement I is false; Statement II is true.

d.) Statement I is false; Statement II is false.

A 0.1 N solution of sodium bicarbonate has a pH value of:

A. 5.6

B. 7.0

C. 8.4

D. 4.0

A. 5.6

B. 7.0

C. 8.4

D. 4.0

pH of \[{10^{ - 6}}M\] HCl (aq) is

(A) just less than 6

(B) exactly equal to 6

(C) just greater than 6

(D) just less than 7

(A) just less than 6

(B) exactly equal to 6

(C) just greater than 6

(D) just less than 7

The \[pH\] of a solution which is \[0.1M\] sodium acetate and \[0.01M\] acetic acid (\[p{K_a} = 4.74\]) would be:

A. \[4.2\]

B. \[5.1\]

C. \[5.74\]

D. None of these

A. \[4.2\]

B. \[5.1\]

C. \[5.74\]

D. None of these

What is the pH $\left[ {{{\text{H}}_{\text{3}}}{{\text{O}}^ + }} \right]$ 1.0 M? How do I solve it?

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