Buffer: HC₂0/C₂O²- What mass of Na2C2O4 must be added to 500. mL of 0.25 M HC2O4- to generate a buffer with a pH of 4.35? B 1.43 mol Na2C2O4 1 mol HC₂02 A Mass of Na2C₂O4 = [?] g Mass of Salt (g) Enter

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Q: Br ОН Br Br ... CH3 Н -OCH₂CH3

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Q: CH3-CH2-CH2-CH-CH2-CH-CH3                           |               |…

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Q: Н H OH H Н О Br Н Н О ОН CL н н CI О ОН Н Н. Н 'F ОН OH

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Q: QUESTION 20 A sample run through a GC gave a peak with retention time of 2 431 minutes, a peak…

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Q: The [H3O+] = 4.7 x 10-5 M for the HC7H5O2 and NaC7H5O2 solution. What is the pH of the solution?

A: Given H3O+ concentration of the solution, [H3O+] = 4.7*10-5 M

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Q: A) gas B) solid C) liquid D) salts E) ice

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A: The above questions can be answered as follows

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A: Henderson - Hesselbalch equation give the formula for calculating pH of buffer .

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Q: QUESTION 14 What is the [H3O+] in a solution with [OH] = 1 × 10-12 M? O A) 1 x 10-12M OB) 1x 10+2M…

A: Question 14   pH = - log [H3O+] [H3O+] = 10-pH   pOH = - log [OH-] [OH-] = 10-pOH   pH + pOH = 14

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.