the ka of an acid is 1.3 x 10–7. based on the ka and its relationship with kw, what is the value of kb?
a) 1.3 x 10–21

b) 7.7 x 10–15

c) 1.3 x 10–14

d) 7.7 x 10–8

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.