Question

what are the advantages of standard hydrogen electrode​

Answer 1

Answer:

we consider that the standard electrode potential of standard hydrogen electrode is 0

so it can be used to measure standard electrode potential of other substance

it can also act as anode and cathode

Answer 2

Answer:

A Standard Hydrogen Electrode (SHE) is anelectrode that scientists use for reference on all half-cell potential reactions. The value of thestandard electrode potential is zero, which forms the basis one needs to calculate cell potentials using different electrodes or different concentrations.

Standard Hydrogen Electrode (S.H.E.): The electrode consists of a glass jacket

 

consisting of dry hydrogen gas bubbled at one atmosphere. There is a platinum wire sealed in the glass jacket. This entire unit is immersed in 1 M HCl solution.

Pt, H2(g) H+(aq) 

P = (1 atm) (1M) or (aH+ = 1) 

Working: � H2(g) � H+ + e- Oxidation 

H+ + e- �� H2(g) Reduction 

Advantages of Standard Hydrogen Electrode (S.H.E.)

1 Small potential is developed on the hydrogen electrode, hence it can be taken as zero.

2.In determining the single electrode potential, using S.H.E. as a reference, the potential of the unknown potential will be equal to the e.m.f