Constructed Response 5. Zinc metal (Zn) reacts with hydrochloric acid
(HCl) to produce hydrogen gas (H2) and zinc
chloride (ZnCl2). A scientist has powdered zinc
and a chunk of zinc of equal mass. Available in
the lab are dilute HCl and concentrated HCl.
Which combination of zinc and acid would
react most quickly? Explain why the
combination you chose would make the
reaction occur most quickly.

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.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph