Question

for the following double replacement reaction, choose the correct products. agno₃ + k₂cro₄ →

Explanation:

Step1: Recall double - replacement reaction rules

In a double - replacement reaction \(AB + CD
ightarrow AD+CB\). Here, \(A = Ag^{+}\), \(B=NO_{3}^{-}\), \(C = K^{+}\), \(D = CrO_{4}^{2 -}\).

Step2: Balance the charges

For the compound formed by \(Ag^{+}\) and \(CrO_{4}^{2 -}\), using the criss - cross method (charge of \(Ag^{+}\) is \(+ 1\) and charge of \(CrO_{4}^{2 -}\) is \(-2\)), the formula is \(Ag_{2}CrO_{4}\). For the compound formed by \(K^{+}\) and \(NO_{3}^{-}\), since the charge of \(K^{+}\) is \(+1\) and charge of \(NO_{3}^{-}\) is \(-1\), the formula is \(KNO_{3}\).

Answer:

\(\text{Ag}_{2}\text{CrO}_{4}+\text{KNO}_{3}\)