# Chemistry

Greetings:

I was wondering how to calculate the weight/volume % of vinegar using the formula ---------------w/v Per Cent = g/100 mL or grams per deciliter:
WHAT WEIGHT DO I USE NaOH, Acetic ACID?
the data include:
volume of NaOH needed to neutralize Vingegar : 14.24 mL
Volume of Vinegar titrated: 5 mL
molarirty of the vinegar : 0.7776128491 mol/L

Calculated W/V % (g/100 mL) Acetic Acid? _____

Thank you for your help!

1. 👍 0
2. 👎 0
3. 👁 113
asked by Matthew
1. Assuming you have determined the molarity accurately (I assume you titrated the vinegar with the NaOH), you have M = # mols/L. How many mols are in the 5 mL sample? That will be 0.7776 x 0.005 L = ?? and that times the molar mass of acetic acid will give you grams acetic acid in the 5 mL. Multiply that by 100/5 to convert to g/100 and g/100 is percent. Check my thinking.

1. 👍 0
2. 👎 0
posted by DrBob222

## Similar Questions

1. ### CHEMISTRY PLEASE HELP

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)

asked by Josh on October 24, 2011
2. ### 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)

asked by Josh on October 24, 2011
3. ### chemistry

A 3.455 g sample of vinegar is titrated. It requires 16.83 mL of 0.2145 M NaOH to get to the phenolphthalein end point. Calculate the weight percent of acetic acid in this sample of vinegar. ____ % Note: calculate the molecular

asked by ashlee on May 5, 2010
4. ### Chemistry

assuming the vinegar solution has a density of 1.01 g/mL, calculate the percent by weight of actic acid (CH3CO2H) in your sample of vinegar. How does the value compare with 5% the value for the % acetic acid in normal vinegar?

asked by Wandy on March 7, 2012
5. ### Chem

The experiment is about titration of vinegar with NaOH. Before I start titration, I need to calculate how much of vinegar I will want to be using. I think I might use 50ml of distilled water to mix vinegar and I am gonna drop

asked by Kim on October 10, 2010
6. ### Chemistry

A particular vinegar contains 4.0% CH3COOH by mass. It reacts with sodium carbonate to produce sodium acetate, carbon dioxide, and water. How many grams of carbon dioxide are produced by the reaction of 5.00 mL of this vinegar

asked by Faith on October 10, 2015
7. ### chemistry

Could someone help me with this please? In chemistry, we did a lab in which he put brands of commerical vinegar in a microplate. We put in 10 drops of each vinegar in each plate thinger then we added 1 drop of phenolphthalein and

asked by Jeffrey on May 14, 2007
8. ### CHEMISTRY

A 31.43 mL volume of 0.108 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 4.441 g sample of vinegar. Calculate % acetic acid in the vinegar.

asked by Jeffrey on August 25, 2010
9. ### JJ

A 30.84 mL volume of 0.128 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 5.441 g sample of vinegar. Calculate % acetic acid in the vinegar.

asked by Jeffrey on August 25, 2010
10. ### chemistry

A vinegar contains acetic acid, CH3COOH. Titration of 5.000g of vinegar with 0.100, NaOH requires 33.0 ml to reach equivalent point. What is the weight percentage of CH3COOH in vinegar?

asked by Anonymous on March 22, 2018

More Similar Questions