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suter [353]
3 years ago
10

Which statement is correct? A. pKa is not an indicator of acid strength. B. An acid with a small Ka is stronger than an acid wit

h a large Ka. C. An acid with a large pKa is stronger than an acid with a small pKa. D. An acid with a small pKa is stronger than an acid with a large pKa.
Chemistry
2 answers:
Svetradugi [14.3K]3 years ago
3 0

Answer:

D

Explanation:

Since [pKa = - log Ka]....hence..,the larger the Ka value,the stronger the acid is..so this means that the pKa is vice versa

Saying that the smaller the pKa value..the stronger the acid is.

Fantom [35]3 years ago
3 0

Answer:

D) An acid with a small pKa is stronger than an acid with a large pKa

Explanation:

Hi, the acity constant (Ka) gives an idea of the strenght of an acid. The higher the Ka, the stronger the acid.

The indicator pKa is obtained by the following formula:

pKa=-\log{Ka}

Due to the logarithm, when the Ka increases, the pKa decreases.

<u>Putting all this toghether</u>: An acid with a large Ka has a small pKa and is stronger than an acid with a small Ka (large pKa).

So the correct statement is D

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Answer:

E. None of these

Explanation:

We know, By GAS laws,

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\frac{P1V1}{RT1} = \frac{P2V2}{RT2}

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We don't have to worry about the standard units as they are present equally on both the sides and get cut, same goes for R( gas constant)

So putting values, we get

\frac{1*20}{R*10} = \frac{10*V2}{R*100}

Cutting, R on both sides and moving contents to the right so that only V2 is left on the left.

\frac{1*20*100}{10*10} = V2

∴ V2 = \frac{2000}{100}

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2 years ago
What process produces the sediments that ultimately lead to soil formation
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Darya [45]

<span>Good Morning!
 
To measure the volume of an acid we use in the laboratory an instrument called burette (a). This instrument is used to calculate the volumes of chemical solutions. At first glance, these tools may be confused with syringes, but have different functions.
 
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3 years ago
A runner runs 4339 ft in 7.45 minutes. What is the runner's average speed in miles per hou 6.62 mi/hr O 0.110 mi/hr 6.618 mi/h e
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<u>Answer:</u> The average speed of the runner is 6.618 miles/hr

<u>Explanation:</u>

Average speed is defined as the ratio of total distance traveled to the total time taken.

To calculate the average speed of the runner, we use the equation:

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We are given:

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Hence, the average speed of the runner is 6.618 miles/hr

6 0
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