Question

The type of chemical reaction represented by the following equation is....

HBr + NaOH ---> H2O + NaBr

Select one:
a. decomposition.
b. double displacement.
c. single displacement.
d. synthesis​

Answer 1

b. double displacement/replacement

A double displacement reaction starts with two compounds and ends with two compounds where the positive and negative ions have changed places.

In this case, Hydrogen and Sodium exchange bonds, ultimately displacing each other, and because both ions are switching, it is double.

Therefore, this is a double displacement reaction.