Which of the following are true for the following two reactions at 25°c: reaction 1: no(g) + o(g)  no2(g) reaction 2: no2(g) + no2(g)  n2o4(g) hint: no2 has the structural formula ono, and n2o4 has the structural formula o2nno2 i: for reaction 1, the following collision has the correct orientation to react: no   o ii: for reaction 2, the following collision has the correct orientation to react: o2n   no2 iii: assuming activation energies are equal, reaction 1 is predicted to have a higher rate than reaction 2 a) only i b) only ii c) i and iii d) ii and iii e) i, ii, and iii

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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.