De exemplos de substâncias apolares e polares

The answers for the following question is answered below.

Explanation:

Polar substance:

A polar substance are the compounds that have slight charges(slight positive and slight negative) within the compound.The slight charges are due t the electronegativity difference of 0.3 to 1.4.

They do not share equally electrons in the covalent bond.

Electronegativity:

The attraction of an element that has for electrons.

Greater the electronegativity more the electrons are pulled.

Examples of polar substances are:

water -ammonia -sulfur dioxide -hydogen sulfideethanol -

Note:

Ionic compounds such as sodium chloride(NaCl) are polar.

Non-Polar substance:

The compounds that do not have slight negative and positive charges within the compound.

The electronegativity differences of non polar compounds are between 0 and 0.2.

All the hydrocarbons are non polar sub-groups are non polar compounds.

They do share equally electrons in the covalent bond.

Examples of non polar substances:

Any of the noble gases(He,Ne,Ar,Kr)These are toms but not moleculesAny of homo-nuclear diatomic elements(,)carbon dioxide()benzene(C_{6} H_{6} )methane(CH_{4} )Most organic moleculesethylene(C_{2} H_{4} )

Option A. 2, 3, 2

Explanation:

We'll begin by balancing the equation. This can be achieved by doing the following:

Fe + Cl2 —> FeCl3

There are 2 atoms of Cl on the left side and 3 atoms on the right side. It can be balance by putting 3 in front of Cl2 and 2 in front of FeCl3 as shown below:

Fe + 3Cl2 —> 2FeCl3

There are 2 atoms of Fe on the right side and 1 atom on the left side. It can be balance by putting 2 in front of Fe as shown below:

2Fe + 3Cl2 —> 2FeCl3

Now the equation is balanced.

The coefficients are : 2, 3, 2