Question

calculate new potential of standard hydrogen electrode if pressure is increased to 10 bar but concentration and temperature remain same 2H+/ H2(gas) = 0.00V​

Answer 1

Answer:

WELDING IN VERTICAL-DOWN POSITION WITH LOW-HYDROGEN ELECTRODES

Electrode type

Low hydrogen electrodes for vertical-down welding have a more stable arc than common low hydrogen electrodes for vertical up welding. If welding out of position is done safety against slag flowing ahead of the weld pool can be stated as further characteristic.

Welding technology

Using low-hydrogen electrodes, the root pass is usually welded with dia 2,5 mm to reach the most favourable bead shape in comparison to cellulosic electrodes. The necessary root-gap should be 3 mm wide and have a face with maximum 1 mm width.

The second layer could be placed already with dia 4 mm, because lateral undercuts occur scarcely at root pass welding with low-hydrogen electrodes for vertical-down welding.

Answer 2

The answer is in the attachment.

I hope this helps you :)