April 19, 2015

Homework Help: Chemistry

Posted by Steve on Monday, October 4, 2010 at 10:17pm.

I there, this is my lab worksheet, I am having trouble filling it out. Please help me with it.

Expt #1- Molecular Weight of Unknown Acid

Unknown Acid: #3
Mass of Unknown solid acid transferred:1.0g
Volume of volumetric flask: 100.00 mL
Concentration of NaOH: 0.0989 M
Aliqot of acid titrated with NaOH: 25.00 mL
Average volume of Naoh from titration: 14.34 mL

Here's where I need help:
No of moles NaOH used: ? mol

Molar ratio of base to acid?

The unknown acid is mono, di, triprotic acid:?

The titration reaction was:?

No. of moles acid in 25 mL solution:?

Gram-Molecular acid in 25mL solution?

I know it's a lot but please help me as much as you can.

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