What is the mole fraction of h_2 in a mixture with a total pressure of 800 torr when the partial pressure of h_2 is 90 torr? a. 1.0 b. 8.8 c. 0.5 d. 0.11 e. 0.88

The correct answer is d) 0, 11

Explanation:

We use Dalton`s Law:

Partial Pressure = Total Pressurex mole fraction

90 torr = 800 torr x mole fraction

Mole fraction = 90 torr/ 800 torr= 0, 1125

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.