Answer:
<h2>2Na(g) + Cl2 (g) --> 2NaCl(s)</h2>
Explanation:
- Such type of chemical reaction in which change in oxidation state takes place due to loss and gain of electrons is known as a redox reaction.
- Such type of the species that lose electron is called reducing agent and the process is known as oxidation because the species is oxidized by losing an electron and thus acts as a reducing agent.
- Such type of the species that gain electron is called an oxidizing agent and the process is known as reduction because the species is reduced and thus acts as the oxidizing agent.
- In the given options, only the oxidation number changes in the reaction such as , so it is a form of the redox reaction.
- In this reaction, Na atom changes into ion and the Cl atom converts into ion that means a change in oxidation states occurs 0 to +1 in the case of Na atom and 0 to -1 in the case of Cl atom. In others options, there is no change in the oxidation state so they are not redox reactions.
Answer:
Most similar - Lithium
Least similar - Phosphorus
Explanation:
Rubidium is an element in group 1A of the periodic table. It is a metal and forms an ionic compound with chlorine. The formula of the compound is RbCl.
If we look at the options, Lithium is also a group 1A element and forms an ionic compound with chlorine having the formula LiCl which is very much similar to RbCl chemically.
Phosphorus is a nonmetal. Its compounds with chlorine, PCl3 and PCl5 are covalent and does not resemble RbCl in any way.
Gold isn't very reactive (it's low on the reactivity table).
It doesn't react with oxygen or halogens with any ease, nor does it tend to dissolve in acid.
<u>Reaction</u> :-
CaCO3 + CH3COOH → Ca(CH3COO)2 + H2O + CO2
Yes it is a chemical change as we know that chemical changes result in formation of new substances, and in this reaction calcium acetate, carbon dioxide, and water are produced.