A second analyst was attempting to determine the percent KHP in an unknown sample, similar to that in the CEM 262 laboratory experiment 1. The analyst found the molarity of the standardized NaOH solution to be 0.1016 mol/L. Three aliquots of the unknown sample having weights of 0.8181 g, 0.9393 g, and 0.8719 g were titrated with the NaOH solution requiring 20.00 mL, 22.39 mL, and 22.14 mL, respectively. From these data, determine the average percent KHP in the unknown sample.

Question
Asked Jan 16, 2020
52 views

A second analyst was attempting to determine the percent KHP in an unknown sample, similar to that in the CEM 262 laboratory experiment 1. The analyst found the molarity of the standardized NaOH solution to be 0.1016 mol/L. Three aliquots of the unknown sample having weights of 0.8181 g, 0.9393 g, and 0.8719 g were titrated with the NaOH solution requiring 20.00 mL, 22.39 mL, and 22.14 mL, respectively. From these data, determine the average percent KHP in the unknown sample.

check_circle

Expert Answer

star
star
star
star
star
1 Rating
Step 1

From the given molarity of NaOH, number of moles of NaOH can be calculated followed by the calculation of moles of KHP and its mass.

First aliquot:

Chemistry homework question answer, step 1, image 1
fullscreen
Step 2

Second aliquot:

Chemistry homework question answer, step 2, image 1
fullscreen
Step 3

Third aliqu...

Chemistry homework question answer, step 3, image 1
fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Which boiling point and melting point is the higher between cis-1,3-dimethylcyclobutane and trans-1,...

A: Cis-1,2 dichloroethylene has the highest point than trans-1, dichloroethylene.

question_answer

Q: [a] The compound 1-iodododecane is a nonvolatile liquid with a density of 1.20g/mL. The density of m...

A: Given:Density of 1-iodododecane=1.20 g/mL.Density of mercury=13.6 g/mL.Height of mercury column=749 ...

question_answer

Q: What mass of sodium benzoate should be added to 150.0 mL of a 0.15 M benzoic acid solution in order ...

A: The mass of sodium benzoate that should be added to 150.0 mL of a 0.15 M benzoic acid solution in or...

question_answer

Q: <p>What is the general two-step mechanism by which most enzymes work?</p>

A: The catalysts which drives the rate of reaction are known as enzymes. Most of the catalyst are made ...

question_answer

Q: Rubidium has two naturally occurring isotopes, rubidium-85 (atomic mass = 84.9118 amu; abundance = 7...

A: Given information:Isotopes of rubidium are Rb-85 and Rb-87.Atomic mass of Rb-85 is 84.9118 amu and a...

question_answer

Q: One way in which Earth’s evolution as a planet can be understood is by measuring the amounts of cert...

A: Click to see the answer

question_answer

Q: >What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered a...

A: The ratio of sodium benzoate to benzoic acid is calculated using Henderson-Hasselbalch as,

question_answer

Q: Based on its fundamental definition, explain why entropy is a measure of energy dispersion.

A: The entropy of state is related to the number of ways to arrange the components of the system have e...

question_answer

Q: There are 5.9 grams of salt (NaCl) per teaspoon and there are 236.5mL per cup. Calculate the Molarit...

A: Calculate number of moles of NaCl: