In the electrolysis of a concentrated solution of sodium chloride using electrodes, which of the following ions are discharged at the cathode and anode respectively?
Na+ and Cl-
Na+ and OH-
H+ and OH-
H+ and Cl-
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Discussions (39)
D is the correct answer
Na is higher than H in the series so H is discharged
Cl is only preferentially discharged over OH and any other when it is in concentrated form so the right answer is truly D
In the electrochemical series, prefrential discharge increases down the seriez, xo since H+ is lower, it is discharged in place of Na+. In the anions series, electronegativity increases up d group, xo since Cl- is higher, it is prefrentially discharged instead of OH
Please be ye sure of whatever you say kos it may be used against someone in jamb hall
they are correct
at the cathode: hydrogen ions are preferentially discharged
while
at the anode Cl- is preferentially discharged
check new school chemistry page 206 ..
Exam success jambites ❤️💞
Are u guys serious, u are all talking trash. The right answer is A. Check electrolysis of brine on Ababio.
at anode: chlorine ion is discharged
at cathode: sodium ion is discharged
All of u should take note including@myschool, the solution is concentrated(KEYWORD), that is no or very little H2O, as a result, there is no competition with H+ and OH-.
Even though it was dilute, the answer would have still not been D rather C. I am disappointed in guys. please make this correction in no time @myschool.
note in the cathode sodium is concentrated there for h will discharge and in ankde chlorine will be discharged. this is according to factors affecting discharge of electrons
sincerely its not correct, well Hydrogen is preferentially discharged in place of sodium, but in the case of chlorine, OH is preferentially discharged to Chlorine... so the Answer is wrong...
the soln is concentrated so there is no competition with OH or H+ pls corrections have to be made pls
