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# Can someone help me in solving the first question please. And second question I just included...

Can someone help me in solving the first question please. And second question I just included just to see if my answer is correct. My dyslexia plays with my mind sometimes =/

The pKb of ammonia is 4.74. What is the pKa?

 A 9.26 B 4.74 C 0.676 D 14 E 0.211

If I dissolve KOH in solution to a concentration of 3.4 x 10-4, what is [OH-] in solution?"

 A. 3.4 x 10-4 B 2.94 x 10-11 C Can t be determined without the pKa D 2.94 x 10-10 E 3.47

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HELP!! I keep getting these two questions wrong. THANK YOU to whoever can help me with this. If I dissolve KOH in solution to a concentration of 3.4 x 10-4, what is [OH-] in solution?" 3.4 x 10-4 2.94 x 10-11 Can t be determined without the pKa 2.94 x 10-10 3.47 If [H+] in aqueous solution is 6.50 x 10-6, what is [OH-]?" 1.67 x 10-4 1.67 x 10-9 4.22 1.67 x 10-10 6.50 x 10-6

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