Question

A student determines that she used 0.0665 mol of sodium hydroxide (NaOH) to completely titrate 25.00 mL of sulfuric acid solution (H2SO4). What is the molarity of the sulfuric acid?

0.00131 M
0.00262 M
1.31 M
2.62 M

Answer 1

The answer is D 2.62 M

Step-by-step explanation:

Answer 2

To determine the concentration of one solution which is specifically basic or acidic solution through taking advantage on its points of equivalence, titration analysis is done.

Let us determine the reaction for the titration below:

2NaOH +2H2SO4 = Na2SO4 +2H2O

So,

0.0665 mol NaOH (2 mol H2SO4/ 2mol NaOH) / .025 L solution

= 2.62 M H2SO4

The answer is the fourth option:

2.62 M