Discuss the construction and use of Frost Ebsworth diagrams in the determination of stability of oxidation states.

What is the purpose of a “salt bridge?

Magnesium, the element, is produced commercially by electrolysis from a molten salt (the “electrolyte”) using a cell similar to the one shown here. Chlorine gas is evolved as the voltage is applied in the cell. Knowing this, identify the electrolyte

323 C of charge is passed through a solution of CoSO4(aq). Determine the number of moles of cobalt deposited. Faraday's constant is 96485 C/mol e-.

8. A 2.856-g sample of limestone was analyzed for Fe, Ca, and Mg. The iron was determined as Fe;Os, yielding 0.04561 g. Calcium was isolated as CaSO4, yielding a precipitate of 1.487 g, and Mg was isolated as 0.1599 g of Mg;P2O7. Report the amount of Fe, Ca, and Mg in the limestone sample as %w/w FeO, %w/w CaO, and %w/w MgO.

alternative to the (a) · Provide following reactions with justification in support of the alternative method : green ÇHO NaOH (i) Ph ELOH Ph ÇOOET КОН (ü). Br ELOH, reflux, 36 hrs, Он COOEt

Nitrous acid (HNO2) disproportionates in acidic solutionto nitrate ion (NO3- ) and nitrogen oxide (NO). Write abalanced equation for this reaction.

What is observed when carbon dioxide gas is passed through lime water.(a) for a short duration?(b) for long duration?Also write the chemical equations for the reactions involved.

While working in a metal processing facility, Letlen had accidentally mixed two metal vatstogether creating an alloy. One vat was labeled for cadmium, while the other was not. It canbe assumed that these are of pure metal composition. To identify this metal, Letlen took 1.000 g of the homogenous alloy sample composed ofcadmium and the unknown metal, dissolved, and diluted it to exactly 100.0 mL in avolumetric flask. A 20.00-mL aliquot was taken and titrated this using 22.82 mL of 0.05000M EDTA. In a second 20.00-mL aliquot, the Cd was masked through the addition of HCN/NaCN buffer.The titration of the unknown metal in the aliquot required 15.13 mL of EDTA.MW: Cd (112.411 g/mol) a. Calculate the moles of Cd and the moles of unknown metal in the 20.00-mL aliquot.b. Calculate the moles of Cd and the moles of unknown metal in the sample.

The following analytical procedures were used for the determination of chlorate (ClO3-). 10.00 mL of solutionA containing chlorate is analyzed. The chlorate is reduced with granulated zinc (to chloride).The excess zinc is dissolved in acid, after which the sample is filtered. The filtered sample is added70.00 mL 0.100 M AgNO3 solution dropwise. The precipitate is filtered off, washed and dried.It weighs 0.6003 grams. Calculate the chlorate concentration in solution A