Using EES (or other) software, calculate and plot the entropy change of air across the normal shock for upstream Mach numbers between 0.5 and 1.5 in increments of 0.1. Explain why normal shock waves can occur only for upstream Mach numbers greater than Ma 5 1.

Reaction A has a higher net reaction rate

Explanation:

Rate of electrochemical reaction rate per unit area =

F = 96500 C ( Faraday constant)

n = number of moles of electrons per mole of reactant

A = Area of electrode

i = current generated

convert the current from Amperes to C

To calculate net reaction of reaction A

i = 5 c

n = 2

A = 2

back to the equation

=  5 / (2 * 96500 * 2) = (1.3 * 10 ^ -5)  mols^-1 cm^-2

To calculate net reaction of reaction B

i = 15 c

n = 3

A = 5

back to the equation

= 15 / ( 3 * 96500 * 5) =  (1.036 * 10 ^ -5)  mols^-1 cm^-2