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Chemistry
Ph scale
What does pH stand for? What does a pH scale indicate?
Chemistry
Ph scale
What is the pH optimum for pepsin
A.$2$
B.$4$
C.$6$
D.$8$

Chemistry
Ph scale
What is the pH value of base?
A.$>7$
B.$<7$
C.$=7$
D.None of these.

Chemistry
Ph scale
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
Chemistry
Ph scale
Why $KCl$ used in pH meters?

Chemistry
Ph scale
How does the pH Scale Measure Acidity?
Chemistry
Ph scale
Explain what is the definition of $pH$ with the help of examples and the equation that is used for calculating it.

Chemistry
Ph scale
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.

Chemistry
Ph scale
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

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

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