5g metal Zinc reacts with hydrochloric acid to form hydrogen gas. What is the balanced chemical equation to represent the reaction

Zn (s) + HCl (aq) →  ZnCl₂ (aq) + H₂ (g) ↑

Explanation:

Let's define the reactants:

Zn (s)

HCl (aq)

One of the product is: H₂ (g)

This reaction can also produce ZnCl₂ (s)

Let's make the reaction:

Zn (s) + HCl (aq) →  ZnCl₂ (aq) + H₂ (g) ↑

Notice that the the hydrogen gas is released from the tube, that's why the up arrow.

This is a redox reaction because the Zn and H chage their oxidation states.

Zn ⇄ Zn²⁺ +  2e⁻     Oxidation (it released two electrons)

Oxidation state is increased

2H⁺ + 2e⁻ →  H₂     Reduction (It gained two electrons)  

Oxidation state is decreased

The oxidation state of elements at ground state is 0

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation:

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.