Explain write balanced equations for each reduction step

Assignment Help Chemistry

Reference no: EM13170413

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:
(a)What is the coordination geometry about the vanadium ion incrystals of the alum?
(c)Write balanced equations for each reduction step
(d)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)?

Reference no: EM13170413

Questions Cloud

Explain how many moles must eb used : how many moles of H2SO$ must eb used to produce 6.5 mol of water..?? Someone posted this question before and somehow NaOH

Explain what causes a protein to migrate on sds-page : What causes a protein to migrate on sds-page in such a way that it appears to be a protein

Compute the percent yields of hexanol : Using Gas Chromatography results and mass of your product mixture, calculate the percent yields of both 1-Hexanol and 2-Hexanol.

Explain what happens to the time at which the mid point : What happens to the time at which the mid point of the breakthrough curve exists the column if the particle size is halved but the adsorption isotherm and column size stay the same?

Explain write balanced equations for each reduction step : (a)What is the coordination geometry about the vanadium ion incrystals of the alum? Write balanced equations for each reduction step

Explain the negative molecular ion : In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?

State hcl according to the chemical equation : HCl according to the following chemical equation? MnO2+4(HCl) --> MnCl2 + Cl2 + 2(H2O)

Explain and predict the hydration product of limonene : predict the hydration product of limonene if two molecules of water are added to a limonene molecule. 2. draw the expanded structure of D-limonene and circle the two isoprene units in limonene.

Draw the structure of oil clearly : Drawa a fat (oil) molecule representing corn oil. The fatty side chains that you need to include are two of the esters group derived from oleic acid and one from the linoleic acid. Draw the structure of this oil clearly with appropriate double bon..

User Account

All Pages