Why does HCl dissolve in water?

How many moles of HCL...?

  • How many moles of HCL do you need to dissolve in 1.0 L of water so the hydroxide ion concentration is 6.0 x 10^-12 M? The answer is 1.7 x 10^-3, but I need to know how to get there.

  • Answer:

    Divide the hydroxide concentration by 1.0^-14 to get the hydrogen ion concentration. Since you have 1.0 L of water, whatever the [H+] is, that's the # of moles of H+ you need. You get 1 H+ from each HCl, so mol HCl = # mol H+ you need.

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