Chemistry, 21.09.2019 18:10, jackieanguiano3700
Rhcl (aq)+3erh(s)+6ct (aq) e=+0.44 v the mass of material deposited depends on the time and current used in the electroplating process. calculate the mass of rhodium deposited in 2 minutes (i) when a current of 0.4 a is used. faraday constant = 96485 a s mol, ram (rh) = 102.9] (ii) a ring with surface area 18.3 cm2 is rhodium-plated using the conditions given in part (a)(i). calculate the thickness of the rhodium. give your answers in microns (um.) [the density of rhodium is 12.41 g cm (8 marks) (b) draw a cell diagram for a galvanic cell comprising a rh electrode in sodium hexachlororhodate solution and an ag electrode in silver nitrate solution. (i (3 marks) (i) the standard reduction potential for silver is +0.80 v. write the half-cell equation for this reduction. (2 marks) (iii) at which electrode will the reduction reaction occur? calculate the cell potential (3 marks) (iv) write the overall reaction equation for the process occurring in the cell and calculate age of this reaction. (4 marks)
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Rhcl (aq)+3erh(s)+6ct (aq) e=+0.44 v the mass of material deposited depends on the time and current...
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