The concentration of ammonia in a cleaning product was determined by back titration. Firstly, 10.00 cm3 of the cleaning product was pipetted into a large conical flask, containing 250.00cm3 of 0.50 mol/l HCl to give Solution A. Following a period of reaction and shaking, 50.00cm3 of Solution A was removed and diluted to 250 cm3 with water in a volumetric flask to give Solution B. 20 cm3 samples of Solution B were titrated against 0.05 mol/l Na2CO3 solution, giving an average titre of 12.45 cm3 . i) Write equations for the reactions that have taken place. ii) Determine the concentration of NH3 in the original cleaning product in mol/l, g/l, ppm, and % w/v.
The concentration of ammonia in a cleaning product was determined by back titration. Firstly, 10.00 cm3 of the cleaning product was pipetted into a large conical flask, containing 250.00cm3 of 0.50 mol/l HCl to give Solution A. Following a period of reaction and shaking, 50.00cm3 of Solution A was removed and diluted to 250 cm3 with water in a volumetric flask to give Solution B. 20 cm3 samples of Solution B were titrated against 0.05 mol/l Na2CO3 solution, giving an average titre of 12.45 cm3 . i) Write equations for the reactions that have taken place. ii) Determine the concentration of NH3 in the original cleaning product in mol/l, g/l, ppm, and % w/v.
Chapter13: Titrations In Analytical Chemistry
Section: Chapter Questions
Problem 13.5QAP
Related questions
Question
The concentration of ammonia in a cleaning product was determined by back titration.
Firstly, 10.00 cm3 of the cleaning product was pipetted into a large conical flask,
containing 250.00cm3 of 0.50 mol/l HCl to give Solution A.
Following a period of reaction and shaking, 50.00cm3 of Solution A was removed and
diluted to 250 cm3 with water in a volumetric flask to give Solution B.
20 cm3 samples of Solution B were titrated against 0.05 mol/l Na2CO3 solution, giving
an average titre of 12.45 cm3
.
i) Write equations for the reactions that have taken place.
ii) Determine the concentration of NH3 in the original cleaning product in mol/l,
g/l, ppm, and % w/v.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 19 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Chemistry by OpenStax (2015-05-04)](https://www.bartleby.com/isbn_cover_images/9781938168390/9781938168390_smallCoverImage.gif)
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
![Chemistry by OpenStax (2015-05-04)](https://www.bartleby.com/isbn_cover_images/9781938168390/9781938168390_smallCoverImage.gif)
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax