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3 years ago

GIVING BRAINLIEST FIVE STARS AND HEART!

Chemistry

2 answers:

marissa [1.9K]3 years ago

7 0

Answer:

The pH of an acid is lower than a neutral solution.

Explanation:

A neutral solution is 7.0 and anything below a 7.0 is considered acidic.

Amanda [17]3 years ago

3 0

Answer:

Brainliest

Explanation:

pH is a major parameter that is measured in determining the water quality. It indicates whether a water source is of good quality to be used for drinking purposes and other house hold needs. In addition, maintaining the appropriate pH is critical for some chemical reactions as well. The pH of a system is dependent on the concentration of hydrogen ions present in that system. The concentration of hydrogen ions in a solution is the amount of hydrogen ions (in the units of mol) present in a liter of solution. pH is the logarithmic value of the inverse of the hydrogen ion concentration. This is the relationship between hydrogen ions and pH.

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valina [46]

Answer:

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i would say not d im not fully sure but id say c

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3 years ago

Please help with chemistry question... It would help me tremendously and if you can, please show work :)?

Alexxandr [17]

Answer:

5.06 atm

Explanation:

Step 1:

Data obtained from the question. This includes:

Mass of S2O = 175g

Volume (V) = 16600 mL

Temperature (T) = 195°C

Pressure (P)

Step 2:

Determination of the number of mole of S2O in 175g of S2O.

Mass of S2O = 175g

Molar Mass of S2O = (32x2) + 16 = 64 + 16 = 80g/mol

Number of mole of S2O =.?

Number of mole = Mass/Molar Mass

Number of mole of S2O = 175/80

Number of mole of S2O = 2.1875 moles

Step 3:

Conversion to appropriate units.

It is essential to always express the various variables in the right units of measurement in order to obtain the desired answer in the right units.

For volume:

1000mL = 1L

Therefore, 16600mL = 16600/1000 = 16.6L

For temperature:

Temperature (Kelvin) = temperature (celsius) + 273

Temperature (celsius) = 195°C

Temperature (Kelvin) = 195°C + 273 = 468K

Step 4:

Determination of the pressure.

The pressure can be obtained by the application of the ideal gas equation. This is illustrated below:

Volume (V) = 16.6L

Temperature (T) = 468K

Number of mole (n) = 2.1875 moles

Gas constant (R) = 0.082atm.L/Kmol

Pressure (P) =

PV = nRT

P x 16.6 = 2.1875 x 0.082 x 468

Divide both side by 16.6

P = (2.1875 x 0.082 x 468) /16.6

P = 5.06 atm

Therefore, the pressure is 5.06 atm

6 0

4 years ago

The side chain of histidine has a pKa of about 6. What percent of histidine side chains would be deprotonated at pH 7.5

Setler [38]

The percent of histidine side chains would be deprotonated at pH 7.5 is 5.77 %.

The term pKa refers to the negative logarithm of the acid dissociation constant (Ka). The pH is the negative logarithm of the hydrogen ion concentration.

Hence;

Ka = Antilog (-6) = $1 * 10^-6$

[H^+] = Antilog (-7.5) = $3 * 10^-8 M$

We now have to use the formula;

α = $\sqrt{} \frac{Ka}{[H^+] }$

α = $\sqrt{} \frac{ 1 *10^-6}{3 *10^-8 }$

α = 5.77 %

Hence, the percent of histidine side chains would be deprotonated at pH 7.5 is 5.77 %.

Learn more about percent dissociation: brainly.com/question/12273293

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3 years ago

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Answer:

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