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DochEvi [55]
2 years ago
13

What conditions must exist for a polyatomic molecule to be nonpolar?

Chemistry
1 answer:
ollegr [7]2 years ago
7 0
  • All atoms in that molecule shall belong to the same element.
  • Otherwise, dipoles must balance each other within the molecule. In such cases, the molecule needs to be symmetric.
<h3>Explanation</h3>

The molecule in question is polyatomic. It contains more than one atoms. That's a rather general definition. Among all non-metals, only the noble gases could form stable monatomic molecules.

Molecules such as N₂, O₂, P₄, and S₈ are nonpolar. All atoms in such molecules belong to the same element. All of their bonds are nonpolar. As a result, the molecules are nonpolar.

Molecules such as CO₂ and CCl₄ are polyatomic. Besides, their atoms belong to more than one element. As a result, some of their bonds are polar. Those polar bonds will create dipoles. However, both CO₂ and CCl₄ are symmetric.  Dipoles balance within the molecule. For example, CO₂ is linear. Dipoles from the two polar C=O bonds will line up in opposite directions. They would balance each other, such that the net dipole of the CO₂ molecule is zero. As a result, CO₂ will be a nonpolar polyatomic molecule.

Similarly, C-Cl bonds in CCl₄ are polar. However, CCl₄ molecules are tetrahedral. They are symmetric. Dipoles from C-Cl bonds will add up in all four directions to produce a net dipole of zero. As a result, CCl₄ molecules are nonpolar.

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If 20 grams of N2 react completely with H2 , how many moles of NH3 are produced? Show Work
Maslowich
This is the balanced eq
N2 + 3H2 -> 2NH3
first you need to find mole of N2 by using
mol = mass ÷ molar mass.
mol N2= 20g ÷ (14.01×2)g/mol
=0.7138mol
then look at the coefficient between H2 and NH3.
it is N2:NH3
1:2
0.7138:0.7138×2
0.7138:1.4276 moles
moles of NH3 = 1.4276 moles
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Identify the compounds that are soluble in both water and hexane.
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Answer:

The compound which are boh soluble in water and hexane is

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Explanation:

The compounds ethanol and 1-propanol are soluble in both hexane and water.

It is soluble in water as both  consists of polar end due to hydrogen bonding present in the  -OH functional group.

and both are soluble in hexane as they contain a non polar end and the alliphatic hydrocarbon chain in them.

The solubility of alcohols varies in increasing order as the hydrocarbon chain increases. And becaue of this it becomes more non polar.

Non polar properties decreases for branched molecules.

so, the correct option is ethanol and 1-propanol.

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