Which of the following is NOT a valid assumption regarding the calculation of ad

Question

Which of the following is NOT a valid assumption regarding the calculation of adiabatic reaction (flame) temperature?

Question options:

A) You will probably not be able to solve the problem without the use of a polynomial solver and/or spreadsheet program.

B) The entire enthalpy change as a result of the reaction can be balanced with the output temperature of the product stream.

C) Heat capacity remains constant over the entire temperature interval.

D) No heat is lost through the system boundaries.

E) No other materials enter or exit the reactor into which heat may be transferred.

A) You will probably not be able to solve the problem without the use of a polynomial solver and/or spreadsheet program.

B) The entire enthalpy change as a result of the reaction can be balanced with the output temperature of the product stream.

C) Heat capacity remains constant over the entire temperature interval.

D) No heat is lost through the system boundaries.

E) No other materials enter or exit the reactor into which heat may be transferred.

Explanation / Answer

a)

False, you can always use iterations; but it is pretty complex

b)

true

c)

This is FALSE, you can't assume specific heat is constant through all the temperature changes

d)

by definition, it is adiabatic

e)

true, since they carry energy

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