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The pKa of acetic acid is 4.74. What is the pH of a 0.15M solution of acetic acid if the solution is also 0.15M in sodium acetate? 

          The pKa of acetic acid is 4.74. What is the pH of a 0.15M solution of acetic acid if the solution is also 0.15M in sodium acetate?

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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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The pKa of acetic acid is 4.74. What is the pH of a 0.15M solution of acetic acid if the solution is also 0.15M in sodium acetate?
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Transcript

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00:01 Hello everyone in this question we are going to find out ph of 0 .10 molar sodium acetate for that they have given pka of acetic acid which is equal to 4 .76 so here first we are going to find out ka value so as we know that ka is equal to 10 to the power of minus of pka so here they have given pka value that is equal to 4 .76 so that is equal to 10 10 to the power of minus 4 .76 here we get ka value which is equal to 1 .74 into 10 to the power of minus 5 after that we know that ka upon kw is equal to concentration of h plus into concentration of oh minus upon concentration of acetic acid so here we know that ka value is 1 .74 into 10 to the power of minus 5 upon kw value is its constant value that is ionization constant of water that is equal to 1 into 10 raised to minus 14 is equal to at equilibrium the concentration of h plus is x into concentration of oh minus is also x upon concentration of acetic acid is 0 .10…
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