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!
An experiment that illustrates both chemical and electrolyticreduction by the preparation of ammonium vanadium (III) sulfate,(NH4)V(SO4)2.12H20 also known as vanadium alum. Ammonium metavanadate NH4VO3 is reduced by sulfur dioxide to vanadium IV as the vanadyl ion VO2+. This is then reduced by electrolysis ata graphite cathode to vanadium (III).
5g of ammonium metvanadate had 4ml of water added to it. Then20ml of SO2/sulfuric acid solution (1:4 concentrated sulfuric:water) was added which was saturated with SO2. An SO2 bubbler head was attached to the flask. The flask was stoppered and stirred until metavanadate was reduced to vanadylsulfate. The solution was then transferred to a beaker and boiled to expel excess sulfur dioxide.
An electrolytic reduction to vanadium (III) then took place with the vanadyl sulfate solution inside the porous pot and sulfuricacid outside.
Questions are:
What is the coordination geometry about the vanadium ion incrystals of the alum?
Write balanced equations for each reduction step
Assuming an average current of 1.75amps is passed during theelectrolysis, calculate how long it would take to reduce all of theV(IV) in the sample to V(III)?
In this experiment reduction occurs at the cathode. Speculateon what species is being oxidised at the anode during electrolysis?
What is the limiting reagent in this procedure? B. Based on your answer to part A, what mass of Fe(C5H5)2 could theoretically be formed? C. A student who carried out this reaction obtained 2.7 g of ferrocene. What was the percent yield for this re..
The Br-F bond distance in the interhalogen compound BrF is 1.76 Å. Use this information to estimate the average
0.0010 mg of H, 0.0116 mg of C, and 0.0310 mg of O. It was also determined that the unknown compound had a molecular weight of 90.0 g/mol.
what the volume of 0.109m HNO3 that is required to reat completely with 2.5g Barium hydroxide
Nitrogen (N2) reacts with hydrogen to give ammonia (NH3): N2 + 3H2 -> 2NH3 If 30 g of N2 reacts with excess hydrogen, what the mass of ammonia formed would be?
Explain why acetone in the cyclohexane would invalidate the experiment?
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg yr-1.
determine the solubility of CO2 in soda water at 25 degreeC if the pressure of CO2 is 5.2 atm
What is the boiling point elevation and boiling point of a solution that contains 1.20 moles of non-ionic solute in 800.0 g of H2O?
Draw the Lewis Structure for the ClF2+ion and AlF4-. For each ion, what are its electron-pair and molecular geometries? What orbitals on Cl and F overlap to form bonds between these elements
If a 1000 kilogram sample of rock is 0.021% gold by mass. How much zinc is needed to react with the gold extracted from the rock?
what is the molar mass of gas if 0.250 g of the gas occupies 215 mL at 61 8mmHg and 30. 0C
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