1. a 18 m solution of an acid that ionizes only slightly in solution would be
a. concentrate and weake
b. strong and dilute
c. dilute and weak
d. concentrated and strong *** (my guess)

2. calculate the [h^+] for the aqueous solution in which [oh^-] is 1 x10^-9. is this solution acidic, basic or neutral.
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3.the volume of 3.50m hcl needed to make 275ml of 2.90m hcl is

4.what are the products of the self-ionization of water ?
a. h30^+ and h20
b. oh^- and oh^+
c. oh^+ and h^-
d. oh^- and h^+ ***(my guess)

the base dissociation constant is only found
a. concentrated bases
b. dilute bases
c. strong bases ***(my guess)
d. weak bases

what is an acid dissociation constant? when can it not be calculated and why? i got the first part of the question, just not the second part as to when it cannnot be calculated.