at a certain temperature, 0.380 mol ch4 and 0.877 mol h2o is placed in a 1.50 l container.
ch4(g)+2h2o(g)↽−−⇀co2(g)+4h2(g)
at equilibrium, 8.01 g co2 is present. calculate kc.

Kc = 1.4752

Explanation:

⇒ Kc = ( [ CO2(g) ] * [ H2 ]∧4 ) / ( [ CH4 ] * [ H2O ]² )

∴ [ CO2 ] = ( 8.01 g * ( mol / 44.01 g ) ) / 1.5 L

⇒ [ CO2 ] = 0.1213 M

⇒ [ H2O ] = 0.877 mol / 1.5 L = 0.585 M

⇒ [ CH4 ] = 0.380 mol / 1.5 L = 0.253 M

⇒ [ H2 ] = (( 0.380 mol CH4 ) * ( 4 mol H2 / mol CH4 )) / 1.5 L = 1.013 M

⇒ Kc = (( 0.1213 ) * ( 1.013 )∧4 ) / (( 0.253 ) * ( 0.585 )² )

⇒ Kc = 1.4752

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

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