Question

1. which of the following options is the correct chemical formula for zinc acetate?

zn₂(c₂h₃o₂)₂
zn(c₂h₃o₂)₂
znc₂h₃o₂
zn₂c₂h₃o₂

Explanation:

Step1: Determine the charge of zinc ion

Zinc (\(Zn\)) typically forms a \(Zn^{2+}\) ion.

Step2: Determine the charge of acetate ion

The acetate ion (\(C_{2}H_{3}O_{2}^{-}\)) has a charge of \(- 1\).

Step3: Use charge balance

For a neutral compound, the sum of positive and negative charges must be zero. Let \(x\) be the number of \(Zn^{2+}\) ions and \(y\) be the number of \(C_{2}H_{3}O_{2}^{-}\) ions. Using the formula \(x\times(+2)+y\times(-1) = 0\). When \(x = 1\), then \(y=2\). So the formula is \(Zn(C_{2}H_{3}O_{2})_{2}\)

Answer:

B. \(Zn(C_{2}H_{3}O_{2})_{2}\)