# chemistry

If you assume that there is 5% acetic acid in vinegar, how much vinegar should you weigh out so that the endpoint requires 25.0 mL of 0.186 M NaOH?

1. 👍 0
2. 👎 0
3. 👁 158
1. Is that 5% w/w or some other unit? I will assume w/w. That means 5g CH3COOH in 100 g soln. Convert 5g to mols. That's 5/molar mass = about 0.083 mols. How many mols do you need? That equals to mols NaOH = M x L = 0.025 x 0.186 = about 0.0046. So how much of the 0.083 mol vinegar to weigh. It is
0.083mols x (?g/100g) = 0.0046
Solve for ?g.

1. 👍 0
2. 👎 0
2. 5.58 g

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Gr 11 Chemistry-Dilutions

The cafeteria decides to save money by using concentrated acetic acid (CH3COOH at 17.5 mol/L) and diluting it with water toproduce vinegar (5.00% m/v aceticacid). a) What is the concentration of vinegar in mol/L?b) What volume of

asked by Anonymous on December 17, 2017
2. ### Chemistry

A certain vinegar is 6.02% acetic acid (HC2H3O2) by mass. How many grams of HC2H3O2 are contained in a 355-mL bottle of vinegar? Assume a density of 1.01g/mL.

asked by lucylu on February 19, 2010
3. ### 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

asked by Sarah on May 23, 2007
4. ### Chemistry

Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 4.69 g sample of vinegar was neutralized by 32.97 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?

asked by Chris on April 14, 2014

a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have

asked by Josh on October 24, 2011
1. ### chem.

A 10.0 mL of vinegar, an aqueous solution of acetic acid (HC2H3O2), is titrated with .5062M NaOH, and 16.58mL is required to reach the equivalence point. A. What is the molarity of the acetic acid? B. If the density of the vinegar

2. ### Chemistry

Vinegar is a dilute solution of acetic acid. What is the concentration of acetic acid in the vinegar if 26.5 mL of NaOH at 0.250 M are required to neutralize 10.0 mL of vinegar?

asked by Claudia on July 5, 2011
3. ### chemistry

Calculate the mole fraction of acetic acid in vinegar, assuming that vinegar is 5.00% acetic acid(by mass) and that the density of vinegar is 1.05 g/mL

asked by Anonymous on October 18, 2010
4. ### 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
5. ### Chemistry

Vinegar is 5% acetic acid. If the density of household vinegar is approximately 1.00 g/mL, how many grams of acetic acid are contained in 10.0 mL of vinegar? So I started out with 10.0 mL of HC2H3O2 then multiplied by 1.00g/1mL.

asked by Samantha on January 28, 2009
6. ### Chemistry

Assuming the density of vinegar is 1.0 g/mL ' what is the molarity of vinegar? (use the percent by mass of acetic acid to vinegar which is 5%.) The molar mass of acetic acid is 60.05 g/mol?

asked by Anonymous on April 10, 2011