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The PKa of HCl Is -7

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The pKa of HCl is -7. What is the value of the equilibrium constant, Keq, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M] The pK<sub>a</sub> of HCl is -7. What is the value of the equilibrium constant, K<sub>eq</sub>, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M]   A)  1.8 * 10<sup>5</sup> B)  385 C)  1.8 * 10<sup>-5</sup> D)  -1.8 * 10<sup>5</sup>


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