2so3(g)⟶2s(s)+3o2(g)δh=+790kj. how many kilojoules are required when 2.1 moles of so3 reacts?

829.5 kilo Joule heat will be required when 2.1 moles of sulfur trioxide reacts.

Solution:

Given reaction:

On dividing the chemical equation by 2 we get :

If 1 mole of sulfur trioxide requires 395 kJ then 2.1 moles will require:

829.5 kiloJoule heat will be required when 2.1 moles of sulfur trioxide reacts.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

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.