What is the purity of conc. `H_(2)SO_(4)("density" 1.8g//mL)` if `5 mL` of it is neutralized completely with `84.6mL` of `2.0N NaOH`?

Explanation

To determine the purity of concentrated sulfuric acid (H₂SO₄) when it is neutralized by sodium hydroxide (NaOH), we can follow these steps:

### Step 1: Calculate the equivalents of NaOH used
To find the number of equivalents of NaOH used in the reaction, we can use the formula:
\[ \text{Equivalents of NaOH} = \text{Normality} \times \text{Volume (L)} \]
Given:
...