An element F has a relative atomic mass of 88. When a current of 0.5 amperes was persed through the fused chloride of F for 20 minutes and 20 seconds, 0.278g of F were deposited at the cathode. Determine the charge on ion of F (1Faraday = 9650ºC).

Question

An element F has a relative atomic mass of 88. When a current of 0.5 amperes was passed through the fused chloride of F for 20 minutes and 20 seconds, 0.278g of F were deposited at the cathode. Determine the charge on ion of F (1Faraday = 9650ºC).

Answer 1

Quantity of electricity Q=It
=0.5x[(20x60)+20]
=61ºc 
9650ºc→ 1 Faraday 
61º → ^{0.006321244 x 88}/_0.278
The change on the ion is +2