In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric...

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In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric flask and adds water to the mark on the

A student wishes to prepare 300-ml of a 0.236 M iron(III) acetate solution using solid iron(III) acetate, a 300-ml volumetric

In the laboratory, a student dilutes 22.5 mL of a 11.8 M hydrobromic acid solution to a total volume of 125 ml. What is the c

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Answer 1

Answer #1

1) molar mass of potassium acetate : 98g/mol

Moles = mass / molar mass

Moles = 19.3/98 = 0.197

Concentration = moles/ volume

Concentration = 0.197moles/0.125L = 1.57M

CH3COOK= K+ + CH3C00-

thus when potassium acetate is dissolved in water , it dissolves into ions. Both ions are having same concentration. Potassium acetate is highly soluble in water

So concentration of CH3COOK, K+andCH3C00- will be same. All three species will have concentration of 1.57M.

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Answer 2

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