A solution is made by adding solid NaCN to a 0.0300 M HCN solution until the [NaCN] = 0.0150 M. Calculate the pH of the solution when it reaches equilibrium.

its first and third is your answer i did the qustion the fourth isnt right

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

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.

it's c (engineer's do their work with mechanical stuff not on any living being)