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nataly862011 [7]
3 years ago
7

Calculate the concentration of the lactate ion in a solution that is 0.100 m in lactic acid (ch3ch(oh)cooh, pka = 3.86) and 0.08

0 m in hcl.
Chemistry
1 answer:
otez555 [7]3 years ago
7 0
The concentration of the lactate is computed by:

Lactic acid ⇒ H+ + Lactate 
<span>pKa = 3.86
</span>
<span>Ka = 1.38 x 10^-4 would be equal to [H+] [lactate] / [lactic acid]
</span>
<span>HCl ⇒ H+ + Cl- </span>
<span>[H+] = 0.08 
</span>
<span>Lactic acid = 0.10 M 
</span>
<span>1.38 x10^-4 would be equal to 0.08 [Lactate] / 0.10 
</span>
<span>Lactate = 0.10(1.38 x 10^-4/ 0.08 </span>
<span>Lactate = 1.73 x 10^-4</span>
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