B. Solution Reactions Solution Tested Solution Reaction Observation Ammonium Carbonate Unknown solution (D.31) Compare the flame test and solution reactions for the unknown to the observations in Procedure A.1 and A.2. Identify the alkali or alkaline earth element in the unknown solution; circle or underline one of the following: barium calcium lithium potassium sodium strontium

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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.