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11 Dec 2019

Determine the characteristic thickness of the electrical double layer under the above conditions for the case of aqueous solutions at 20 C temperature.

a. NaCl in water at 0.01 M.

b. MgSO4 solution at 0.1 M.

c. AlCl3 in water at 0.05 M.

d. FePO4 in water at 0.01 M.

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Related questions

Please Explain All answers :)

1: What is the concentration of magnesium ions in a 0.250 M MgSO4 solution?

2: Which of the following aqueous solutions will have the highest concentration of chloride ions?

a. 0.10 M NaCl (aq)

b. 0.10 M MgCl2 (aq)

c. 0.10 M AlCl3 (aq)

d. 0.05 M CaCl2 (aq)

e. All of these solutions have the same

concentration of chloride ions.

3: How many grams of potassium permanganate (KMnO4) are needed to prepare 500 mL solution that is 0.2500 molar?

pH= - log{H+} = - log γ[H+]

So what if is [H+] for the following conditions if the pH=7 as measured with an electrode

a Deionized water: (calculate µ!)

b 0.1 M NaCl (use the attached activity coefficient table)

c What is the Kwc at 25°C and 0.1 M NaCl?

d What is the Kwc at 5°C?

Compare the [OH-] concentrations for each of the cases listed above with a measured pH of 7

a Freshwater

b 0.1 M NaCl at 25°C

c 0.1 M NaCl at 5°C

What is the concentration of protonated species for a typicalamine (pKa=10) at pH 7.0 in a 0.01 M solution of the amine?

a. 0.0001 M

b. 0.1 M

c. 0.01 M

d. 0.001 M

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