a solution of sodium chloride discharges 6.1 x 1016 Na+ ions and 4.6 x 1016 Cl - ions in 2 seconds.find the current passing through the solution.
20 May 2017
a solution of sodium chloride discharges 6.1 x 1016 Na+ ions and 4.6 x 1016 Cl - ions in 2 seconds.find the current passing through the solution.
and No. of chares for K+ = 4.6 x 1016 and e = electronic charge = 1.6 x 10-19 C
So, Charge on Sodium ion Q1 = N e = 6.1 x 1016 x 1.6 x 10-19 C = 9.76 x 10-3 C
Similarly Charge on potassium ions Q2=4.6 x 1016 x 1.6 x 10-19 C = 7.36 x 10-3 C
Total charge Q = Q1+ Q2 = (9.76 + 7.36) x10-3 C = 17.12 x 10-3 Coulombs.
Now, we have Q = I. t
here, t = 2 sec
So, current passed, I = Q/t = 17.12 x 10-3 C/ 2 = 8.56 x 10-3 C/s
Similarly Charge on potassium ions Q2=4.6 x 1016 x 1.6 x 10-19 C = 7.36 x 10-3 C
Total charge Q = Q1+ Q2 = (9.76 + 7.36) x10-3 C = 17.12 x 10-3 Coulombs.
Now, we have Q = I. t
here, t = 2 sec
So, current passed, I = Q/t = 17.12 x 10-3 C/ 2 = 8.56 x 10-3 C/s