Compare the percent dissociation of 0.100M propanoic acid

Question

Compare the percent dissociation of 0.100M propanoic acid

Answer 1

Compare it to what?

Look up the Ka for propanoic acid and then multiply it bi 0.1 and take the square root. That gives you the [H+]. Divide that by 0.1 and x100 to get % dissociation. 

Ka = [H+][propanoate]/[propanoic acid]

Ka = (x)(x)/0.1