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HX is a weak acid that reacts with water according to the following equation: HX(aq) +...

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Chemistry

HX is a weak acid that reacts with water according to thefollowing equation: HX(aq) + H2O(l) H3O1+(aq) + X1-(aq) Ka =3.16e-07 What is the equilibrium concentration of hydronium ion ina solution that is 0.0538 M in HX and 0.116 M in X1- ion?

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3.8 Ratings (524 Votes)

HX (aq) + H2O(l)   --------------------> H3O+(aq) + X-(aq)

0.0538                                                    0       0.116         

0.0538 - x                                               x            0.116+x

Ka = x (0.116+x) / 0.0538 - x  

3.16 x 10^-7 = x (0.116+x) / 0.0538 - x

x = 1.47 x 10^-7

[H3O+] = 1.47 x 10^-7 M
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