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2 years ago

5

The volume of a gas must be measured at several points during an experiment. Which units should be used to describe the volume o

f the gas?
liters

centimeters

degrees Celsius

milligrams

1 answer:

PIT_PIT [208]2 years ago

7 0

The unit should be liters

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n acid with a pKa of 8.0 is present in a solution with a pH of 6.0. What is the ratio of the protonated to the deprotonated form

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Answer : The ratio of the protonated to the deprotonated form of the acid is, 100

Explanation : Given,

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pH = 6.0

To calculate the ratio of the protonated to the deprotonated form of the acid we are using Henderson Hesselbach equation :

$pH=pK_a+\log \frac{[Salt]}{[Acid]}$

$pH=pK_a+\log \frac{[Deprotonated]}{[Protonated]}$

Now put all the given values in this expression, we get:

$6.0=8.0+\log \frac{[Deprotonated]}{[Protonated]}$

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As per question, the ratio of the protonated to the deprotonated form of the acid will be:

$\frac{[Protonated]}{[Deprotonated]}=100$

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