# Chemistry

Thanks for your help; I am still have a few problems, could you check my work:

Given: Volume of vinegar analyzed-5mL
Con'c of NaOH-0.09890M
Avg. Volume of NaOH from titration-43.75mL
Density CH3COOH: 1.049g/mL

Calculations:
1.Moles of NaOH required to reach equivalence point= M X L
(0.09890M)(0.04375L)= 0.004327 moles.

2.Moles of acetic acid 5.00mL of vinegar= M X L
(what do I do if the con'c of acetic isn't given)(0.0500L)=?

3. Mass of acetic acid in the 5.00mL sample of vinegar= Mol X MM (0.004327 mol)(60.01g/mol)=0.2529g

4. Volume of the acetic acid in the 5.00mL sample of vinegar
(1.049g/mL)(0.2597g)=0.2724mL

5. % by volume of acetic acid in the vinegar (0.2724mL)/(5.00mL)X 100%= 5.45%

Please let me know if this looks correct.

## Similar Questions

1. ### Chemistry

Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid, HC2H3O2. For 20.0 milliliters of the vinegar 26.7 milliliters of 0.600-molar NaOH solution was required. What was the concentration of acetic …
2. ### 11th grade CHEMISTRY TITRATION LAB!

i have a tritation lab due tomorrow and i am stumped on a couple things. its a titration lab using sodium hydroxide (NaOH)- 250 mL 0.300 M concentration, 10 mL of an unknown substance of vinegar, the avg. of titrated NaOH in the flask …
3. ### chemistry

A vinegar sample was analyzed and found to be 5.88% acetic acid by volume. The density of pure acetic acid is 1.049g/mL. What volume of 0.200M NaOH would be required to titrate a 2ml aliquot of this vinegar?
4. ### chemistry

Question about titration calculations in analysis of antacids lab. We did a lab yesterday with antacids, HCl and NaOH and I'm having trouble doing the calculations. The information known is the following: 1)0.10M NaOH 2)0.10M HCl 3)Mass …
5. ### Chemistry

Hi, could someone help me with these calculations for my lab; Given: Volume of vinegar analyzed:5 mL Con'c of NaOH: 0.09890M Avg. V of NaOH from titration:43.75 mL Moles of NaOH required to reach the equivalence point: ?
6. ### Chemistry

Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH. 2) calculate …