What is Kb for CN- (aq) + H20() = HCN(aq) + OH(aq)?
+

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

b. is the answer hoped i        

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.