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Chemical Engineering Basics - Engineering

Q1:

The thickness of oxide film is y at time t. If K1, K2 and K3 are the temperature dependent constants, the parabolic law of oxidation is given by

A y2 = 2k1t + k2

B y = k1 ln (k2t + k3)

C y = k1 t + k2

D y = k1t3 + k2

ANS:A - y2 = 2k1t + k2

The parabolic law of oxidation describes the growth of oxide films on metals over time. The correct form of the parabolic law is: y2=2K1​t+K2​ Here:

  • y is the thickness of the oxide film at time t.
  • K1​, K2​, and K3​ are temperature-dependent constants.
So, among the options provided, the correct one is: y2=2K1​t+K2​