Answer
The pH of a $NaNO_3$ solution will be equal to 7.
This happens because, this salt is formed by a insignificant acid $(Na^+)$ and an insignificant base $(N{O_3}^-)$, therefore, the solution is neutral.
Work Step by Step
To predict the pH range of an salt:
1. Identify the ions that form this salt, and compare their strengths:
1 $Na^{+}$: Conjugate acid of a strong base $(NaOH)$: Insignificant acid.
1 $N{O_3}^-$: Conjugate base of a strong acid $(HNO_3)$: Insignificant base.
Since there is no significant electrolyte, the solution is neutral.
