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2 years ago

Calculate the pH of the following:

Chemistry

1 answer:

Brums [2.3K]2 years ago

6 0

The pH can be defined as the negative logarithm of the hydrogen ion concentration of the solution.

What we call the pH can be defined as the negative logarithm of the hydrogen ion concentration of the solution. We are aware that we can use the relation [H+] [OH-] = 1 * 10^-14 to handle the enormity of this problem.

Now, let us go about solving the problems;

1. pH = -log(1 x 10-7) = 7

2. [H+]= 1 * 10^-14/ 1 x 10^-3

pH = -log( 1 * 10^-11)

pH = 11

3. pH = -log( 1 x 10^-2)

pH = 2

4. pH = -log( 1 x 10^-10)

pH = 10

5. [H+]= 1 * 10^-14/ 1 x 10^-8

[H+]= 1 * 10^-6

pH = 6

Learn more about pH:brainly.com/question/1528974

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Answer:

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3 years ago

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3 years ago

2. Use the Henderson-Hasselbalch equation to estimate the pH of a buffer solution that is composed of 20 mL of 10 M sodium forma

Mkey [24]

Answer:

pH of buffer =4.75

Explanation:

The pH of buffer solution is calculated using Henderson Hassalbalch's equation:

$pH=pKa+log[\frac{[salt]}{[acid]}$

Given:

pKa = 3.75

concentration of acid = concentration of formic acid = 1 M

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$pH=3.75+log[\frac{10}{1}]=3.75+1=4.75$

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3 years ago

Draw the other possible resonance structure of each organic ion. In each case, draw the structure that minimizes formal charges.

pshichka [43]

Three resonance structures can be drawn for the allyl cation while two resonance structures can be drawn for the amidate ion.

Sometimes, we cannot fully describe the bonding in a chemical specie using a single chemical structure. In such cases, we have to use a number of structures which cooperatively represent the actual bonding in the molecule. These structures are called resonance or canonical structures.

The resonance structures of the allyl cation and the amidate ion are shown in the images attached to this answer. These structures show the different bonding extremes in these organic ions.

Learn more: brainly.com/question/4933048

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3 years ago