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We're asked to find the pH of 50mL of .1 M of a weak acid (labeled...

We're asked to find the pH of 50mL of .1 M of a weak acid (labeled HX), before we add any .1 M NaOH. The Ka is 1.5e-5. The pH I found was 4.00 (feel free to fact check me). Here's the part I need help with:

-We are also asked to find the pH of the solution at the "endpoint". Not sure what this means. Do they mean equilibrium? If so, how would I calculate this? Thanks.

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Answer #1

a given c = (Hx] = 0.1m V = somi Ka = 105x105 it is a weak acid pH = Ź (pka lege] = {(4.823-legen) (*pe-bay ra = 2.911 { = -l

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