# Titration need help getting started

1. Oct 31, 2004

### Mag

[SOLVED] titration need help getting started

A 10.231g sample of window cleaner containing ammonia was diluted with 39.466g of water. Then 4.676g of solution was titrated with 14.22mL of 0.1063 M HCl to reach a bromocresol green endpoint. Find the weight percent of NH3 (FW 17.031) in the cleaner.

I keep trying to find someway of getting the 4.676g solution to a volume amount so i can find the mmol of the analyte.

thanks
mag

2. Nov 1, 2004

### Bystander

Do you need to calculate a volume?

3. Nov 1, 2004

### chem_tr

You may start from here, as this sentence tells you that their millimole amounts are equal. You can find millimoles by multiplying volume by concentration, as $$\displaystyle mL\times \frac {mmol}{mL}$$ gives $\displaystyle mmol$. If 4.676 g of that solution is equal to the millimoles of $\displaystyle NH_3$, you can calculate a weight percentage from there.

Last edited: Nov 1, 2004