Question 1 if we mixed 45cm^3 of 2m naoh with 20cm^3 of 1m hcl and obtained a temperature difference of 9.4°c, what would be the heat of reaction, the enthalpy? . question 2 if we added 10cm^3 hcl of an unknown concentration to 30cm^3 of 2m naoh and obtained a temperature change of 4.5°c and then added 20cm^3 of the same unknown acid to 30cm^3 of 2m naoh and obtained a temperature change of 9.0°c, what is the concentration of the acid? use the enthalpy value from question 1

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.