Question

question 12
1 pts
predict the precipitate that will be formed in the following reaction:
naf(aq) + agno3(aq) →
naf(s)
agf(s)
agno3(s)
nano3(s)
question 13
1 pts
what kind of reaction involves the transfer of a proton (h+) from one species to another?
transmogrification
acid - base reaction
precipitation reaction
oxidation - reduction reaction

Explanation:

Question 12

In a double - displacement reaction \(NaF(aq)+AgNO_{3}(aq)\to\), the cations and anions exchange partners. The general form is \(AB + CD
ightarrow AD+CB\). Here, \(A = Na^{+}\), \(B = F^{-}\), \(C = Ag^{+}\), \(D=NO_{3}^{-}\). So the reaction is \(NaF(aq)+AgNO_{3}(aq)\to AgF(s)+NaNO_{3}(aq)\). According to solubility rules, most nitrates (\(NO_{3}^{-}\)) are soluble, so \(NaNO_{3}\) is in aqueous form. Silver fluoride (\(AgF\)) has low solubility in water and forms a precipitate.

• Transmogrification is not a standard chemical reaction type in basic chemistry.
• In an acid - base reaction (according to the Brønsted - Lowry theory), an acid donates a proton (\(H^{+}\)) and a base accepts a proton.
• A precipitation reaction is about the formation of an insoluble solid (precipitate) from soluble reactants in solution.
• An oxidation - reduction reaction involves the transfer of electrons (change in oxidation states) between species.

Answer:

AgF(s)

Question 13