Equilibrium Quiz 4

Question 1

The number of moles of hydroxide ions $(OH^- )$ produced from 2 moles of $Na_2CO_3$ is

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 2

The $pOH$ value for solution is 4, its hydrogen ion concentration will be

Accepted Answer

$10^{-10}$

Answer

$10^{-4}$

Answer

$10^{10}$

Answer

$10^4$

Question 3

If an acid is diluted

Accepted Answer

pH increases

Answer

pH decreases

Answer

no change occurs

Answer

can vary depending on an acid

Question 4

pH of a solution is 13. $H^+$ ions present in 1 $cm^3$  of the solution is

Accepted Answer

$6.023 \times 10^{7}$

Answer

$6.023 \times 10^{10}$

Answer

$6.023 \times 10^{-10}$

Answer

$6.023 \times 10^{-7}$

Question 5

pH of blood is maintained constant by mechanism of

Accepted Answer

buffer

Answer

common ion effect

Answer

solubility

Answer

all of these

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