I believe the correct answer from the choices listed above is option B. A double-replacement reaction happens when atoms in one compound switch places with atoms in another compound. It is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places. Hope this answers the question.
Which of the following best describes a double-replacement reaction? A. One compound splits up, forming two or more elements or new compounds. B. Atoms in one compound switch places with atoms in another compound. C. A lone element takes the place of a different element in a compound. D. Two elements join together to form a new compound.