Question

(just want to check my answer)

what fact is the most important indicator that the following reaction will take place?

Ni(No3)2)aq) + K2S(aq) NiS(s) + 2KNO3(aq)

A) The reaction is a double displacement *my answer*
B) A precipitate is formed.
C) The reactants are ionic compounds.
D) The products are ionic compounds.

Answer 1

b a precipitate is formed

Answer 2

The answer is B) A precipitate is formed. In the reaction Ni(No3)2)aq) + K2S(aq) -> NiS(s) + 2KNO3(aq), nickel(II) sulfide (NiS) is solid substance as indexed (s) while KNO3 is dissolved in water presented as index (aq). Therefore, if the reaction is successful, a precipitate (the solid substance NiS) will be formed,