A chemical reaction in which two elements or radicals change places with two other elements or radicals is a _______ reaction.
A. double replacement
B. combination
C. substitution
D. decomposition

Respuesta :

Answer. Option A. double replacement. This means that a radical or element from one compound is exchanged by the radical or element from other compound. It is the typical case of the general equation salt + salt -> salt + salt. This is an example: NaCl + KBr -> NaBr + KCl. In this example Br from NaBr replaced Cl from NaCl and Cl from NaCl replaced Br from KBr, that is why it is called double replacement.

It's correct, A. double replacement

ACCESS MORE
EDU ACCESS
Universidad de Mexico