Sulfur dioxide, SO2, is used as a preservative in wine. The sulfur dioxide content of a wine can be found by titration. A chemist found that 25.0 cm
of a sample of wine reacted with exactly 15.00 cm of 0.0010 mol/dm² aqueous iodine, 12(aq).
The equation for the reaction is
SO2(aq) + I2aq) + 2H2O(l) + SO42 (aq) + 21 (aq) + 4H+(aq)
1
(a) Calculate the amount, in moles, of iodine in 15.00 cm? of a 0.0010 mol/dm solution.
(2)

"the periodic table is arranged in order of atomic number."

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.