Answer to Question #115626 in General Chemistry for Collin

Question #115626

A solution is made by combining 15.0 mL of 16.5 M acetic acid with 5.50 g of sodium acetate and diluting to a total volume of 1.50 L. What is the pH of the solution?

Expert's answer

C=n/v=>n(CH3COOH)=c*v=16,5*0, 015=0,2475 moll

n(CH3COONa)=m/Mr=5,5/82=0,067 moll

c2(CH3COOH)=n/v=0,2475/1,5=0,165

c(CH3COONa)=n/v=0,067/1,5=0,045

pH=pK(CH3COOH)+lg(c(CH3COONA)/c(CH3COOH))=4,75+lg(0,045/0,165)=4,19

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27.05.20, 20:53

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Collin

13.05.20, 01:09

The reaction is first order in cyclopropane and has a measured rate constant of 3.36×10−5s−1 at 720 K. If the initial cyclopropane concentration is 0.0600 M , what is the cyclopropane concentration after 249 minutes?

Answer to Question #115626 in General Chemistry for Collin

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