Solid Iron (II) Oxide reacts with Solid elemental iron and oxygen gas to create Iron (III)...

Solid Iron (II) Oxide reacts with Solid elemental iron and oxygen gas to create Iron (III) Oxide. Calculate ∆S * and determine the value for K of this reaction at 25C.

Solutions

Expert Solution

The calculations are as given below [take delta S and delta H vaues from standard data chart]

delta S* = delta Sproducts - delta Sreactants

= 87.40 - 60.75

= 26.65 J/mol.K

delta H* = delta Hproducts - delta Hreactants

= 87.40 - (60.75 + 27.28 + 205.03)

= 87.40 - 293.06

= -205.66 kJ/mol = -205660 J/mol

Feed the values into,

lnK = -delta H*/RT + delta S*/R

= 205660/8.3145 x (25+273) + 26.65/8.3145

= 83.004 + 3.205

= 86.209

K = 2.76 x 10^37

queen_honey_blossom answered 1 year ago

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