Astudent carries out this chemical reaction in a beaker: zn + cucl2 → cu + zncl2. after the reaction has come to completion, what should the student expect to find in the beaker? a. zn and cucl2 b. zn, cucl2, cu, and zncl2 c. cu and zncl2 d. zncl2 only

The correct answer is

C. Cu and ZnCl2

Explanation:

I got it correct on PLATO

The correct answer is option (C).

Explanation:

After the reaction between Zinc and copper(II) chloride, Zinc chloride and copper will be obtained as a product. This reaction occurs because zinc is more reactive than copper which displaces the copper from its aqueous solution.

The student will expect to find copper metal at bottom of the beaker with aqueous solution of zinc chloride.

Hence the correct answer is option (C).

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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.