Nitrotoluene Troubles(quaaludes ala cheapskate)

[Megatherium]

Then from the dropping funnel a pre-cooled (10°C) mixture of 10ml 68% nitric acid (d. 1.42) and ... of concentrated (98%) sulfuric acid (d. 1.84) is slowly added drop by drop while the batch is vigorously stirred.

How many ml H₂SO₄ is added?

[Vitus_Verdegast]

Use 2 mol equivalents sulfuric acid to 1 mol eq HNO₃.

so:  10 ml HNO₃ d 1.42 at 16.14 mol/l makes 0.1614 mol ; 0.1614 * 2 = 0.3228 mol H₂SO₄ needed, this corresponds to 32.306 gram 98%

[hermanroempp]

"Nitrotoluene" :
Shame on me, I forgot to mention how many milliliters of sulfuric acid have to be used in the preparation of the mixed acid!
Well, so...12ml were used.
Thanks to Megatherium for the reminder..