Question

Assume that Q, T, X, and Z are symbols for elements. What type of reaction is represented by the equation QT + XZ –> QZ + XT?

1) decomposition
2) double-replacement
3) single-replacement
4) synthesis

Answer 1

The chemical equation QT + XZ → QZ + XT represents a double-replacement reaction where two compounds exchange components to form two new compounds.

Step-by-step explanation:

The chemical reaction represented by the equation QT + XZ → QZ + XT is a double-replacement reaction. In such a reaction, two compounds exchange partners with each other, forming two new compounds. We can see that Q from QT pairs with Z from XZ, and X from XZ pairs with T from QT, resulting in the products QZ and XT. These characteristics are typical signs of a double-replacement reaction. Single-replacement reactions, on the other hand, involve one element being substituted for another in a compound, forming a new element and a new compound in the process. This is not the case in the equation presented, which confirms that it is indeed a double-replacement reaction.