Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Experiment: Sodium Content in butter
Intro: An experiment conducted to determine that amount of sodium in butter through back titration of measuring chloride ions. the chloride ions themselves are not directly titrated ; rather a known excess of silver nitrate is added to the sample. A silver chloride precipitate immediately forms leaving behind the excess silver ions. the leftover silver ions are then titrated with ammonium thiocyanate forming a silver thiocyanate precipitate. Based on the amount of ammonium thiocyanate consumed, one can back calculate the amount of excess silver that remained after the formation of the silver chloride precipitate. since one knows how much silver nitrate was added originally, one can then calculate the amount of silver chloride which was precipitated and therefore the amount of chloride present. IN this experiment a 1.4897 mass of butter was placed in a 250 Erlenmeyer flask, then hated to melt the butter. once the butter melted 10 ml of water, 25ml of 0.05 M silver nitrate, and 10 ml of 2.00 M nitric acid was added. After boiling again for 10 minutes 60ml of water as added, 1.0 ml of iron (iii) indicator and 1.0 ml of chloroform was added. The samples were then titrated with 0.04M ammonium thiocyanate until the endpoint of 21.60 ml was reached.
Questions:
1. What was the thiocyanate consumed in mmol
2. Excess silver nitrate in mmol
3. The chloride content in mmol
4. Sodium content in mg
Equations:
Ag+ (aq) + Cl- (aq) = AgCl (s)
Ag + (aq) + SCN- (aq) = AgSCN (s)
Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..
This assignment inhibits chemistry Laboratory Questions.
Write the structures of the saytzeff elimination
Chemistry Questions on Calculate P H
how many mols of H 2 can produce
Analysis of corrosion mechanisms and preventative measures
Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.
Calculate the approximate SO 2 mass emission in lb/day.
What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?
Design a qualitative analysis scheme
What will be the resultant pressure when the stopcock is opened?
Integrals for some of the resonances in the 1H NMR spectrum are higher than they should be due to the shear number of hydrogens in this compound
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd