Recall that in an electrolytic cell the anode is given the + sign and the cathode is given the - sign, which is the opposite of what we see in batteries. What half-reaction occurs at the anode in this electrolytic cell?

Oxidation half-reaction.

Explanation:

In electrolytic cell the anode is the positive electrode and the reaction occurring at anode is called Oxidation half-reaction.

The reaction is

⇒

In a half-reaction there is a change in the oxidation state of the individual species involved in the reaction. In the above oxidation half-reaction the -1 oxidation state of A changes to 0 when it loses an electron. And as per the definition oxidation is said to occur when there is a loss of one or more electrons.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: