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aivan3 [116]
3 years ago
13

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12

Chemistry
1 answer:
LuckyWell [14K]3 years ago
8 0
...........ok hold up
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3 years ago
A 0.100 m solution of a monoprotic weak acid has a ph of 3.00. what is the pka of this acid?
Lelechka [254]
Answer is: pKa for the monoprotic acid is 5.<span>
Chemical reaction: HA(aq) </span>⇄ A⁻(aq) + H⁺<span>(aq).
c(monoprotic acid) = 0.100 M.
pH = 3.00.
[A</span>⁻] = [H⁺] = 10∧(-3).<span>
[A</span>⁻] = [H⁺] = 0.001 M; equilibrium concentration.<span>
[HA] = 0.1 M - 0.001 M.
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Ka = [A</span>⁻]·[H⁺] / [HA].<span> 
Ka = (0.001 M)² / 0.099 M.
Ka = 0.00001 M = 1.0·10</span>⁻⁵ M.
<span>pKa = -logKa = 4.99.

</span>
7 0
3 years ago
Read 2 more answers
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