Question

what is true about the following reaction? a + b → ab select the correct answer below: one molecule of a and one molecule of b will yield one molecule of ab one dozen molecules of a and one dozen molecules of b will yield one dozen molecules of ab one mole of a and one mole of b will yield one mole of ab all of the above

Explanation:

Step1: Analyze molecular - level

The chemical equation $A + B
ightarrow AB$ indicates that one molecule of $A$ reacts with one molecule of $B$ to form one molecule of $AB$.

Step2: Analyze dozen - molecule level

If we consider one dozen (12) molecules of $A$ and one dozen molecules of $B$, since the ratio is 1:1, one dozen molecules of $AB$ will be formed.

Step3: Analyze mole - level

A mole is a unit representing a large number of particles. According to the stoichiometry of the reaction, one mole of $A$ and one mole of $B$ (where one mole contains Avogadro's number of particles) will react to form one mole of $AB$. So all the statements are correct.

Answer:

D. all of the above