Why is chlorine gas a product of nacl electrolysis? a. the cl- ions become oxidized at the cathode allowing them to form cl2 molecules. b. the cl+ ions become reduced at the anode allowing them to form cl2 molecules. c. the na+ ions react to the anode, releasing the cl- ions with enough energy to change into a gas. d. the na- ions react to the cathode, releasing the cl+ ions with enough energy to change into a gas.

A. The Cl- ions become oxidized at the cathode allowing them to form Cl2 molecules.

Explanation:

At the anode in an electrolytic cell oxidation occurs.

In the electrolysis of NaCl, at the anode both Cl⁻ and OH⁻ migrates here.

Cl⁻ is preferentially discharged and it undergoes oxidation as shown below:

2Cl⁻ → Cl₂ + 2e⁻

We see a loss of electron and change in oxidation number of Cl from -1 to 0

Chlorine gas is liberated in this electrode.

he would use the colour black

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.