Question

Which is the correct dissociation equation for aluminum nitrate?

a. Al(NO3)3(s) →AI(NO3)3(aq)

b. Al(NO3)3(aq) → Al³+ (aq) + NO3(aq)

c. Al(NO3)3(aq) → Al³+ (aq) + 3NO3(aq)

d. Al(NO3)3(aq) →3 Al³+ (aq) + NO3(aq)

Answer 1

C.) Al(NO₃)₃ (aq) ---> Al³⁺ (aq) + 3 NO₃ (aq)

Step-by-step explanation:

A.) is incorrect because aluminum nitrate is able to dissociate. I other words, it is able to separate into the two ions that created it.

B.) is incorrect because, according to the reactant, there should be 3 nitrates present after dissociation. The dissociation equation is not balanced without this coefficient.

C.) is correct. The two ions that make up aluminum nitrate are Al³⁺ and NO₃⁻. Notice how the charges are not balanced. To make up for this difference, there must be 3 nitrates for every aluminum ion to keep the overall charge of the reaction (and aluminum nitrate) neutral.

D.) is incorrect because there should not be a coefficient of 3 in front of Al³⁺ and instead in front of NO₃.