Lec 22: Examples

[@danielmb298]

The result of integral (first example), the denominator is: (x+2)^2 no (x+2)^3. Thank you for great lectuce!

[@sagarchaudhary2813]

Yes u are right

[@sounaksarkar8696]

Very helpful and nicely explained:)

[@SaiTeja-ob6zg]

thank you sir for the lecture . its very useful !

[@manasiesther9010]

Sir, why is H1,in and H2,in zero in first example?

[@rajubudhoju5405]

The standard enthalpy of formation of a pure element is in its reference form its standard enthalpy formation is zero.

[@bikramsaha5406]

23:39 sir what is the value of X1 and X2 ????why you did not multiply with them ?

[@rajubudhoju5405]

Directly simplified, as we know x1=n1/n, substituting it and multiplied with n. Their n cancelled out, remains n1

[@ChemicalengineerVlogs]

@@rajubudhoju5405 yes

[@ChemicalengineerVlogs]

@@rajubudhoju5405 u answered for every question in commentss topper you are

[@sagarchaudhary2813]

why can't we just take derivative wrt to x1 rather than changing to moles....because taking derivative wrt to x1, means we have taken 1 mole, so answer should match......... but in that case we get different answer......can anybody please explain it

[@ombie9439]

Same doubt

[@doinggood3564]

Anbody 30:35 H2
& H3 = 0 ?

[@ashutoshchaturvedi6435]

You are taking derivative(partial) of n2H2 and n3H3 wrt n1 at CONSTANT n2 and n3 that's why n3 and n2 becomes zero (not H2 and H3)...