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Explain what solvent you try to use for a non-polar solid suchas biphenyl...

Question

Explain what solvent you try to use for a non-polar solid suchas biphenyl

Explain what solvent you try to use for a non-polar solid such as biphenyl



Answers

Explain how a molecule that contains polar bonds can be nonpolar.

A molecule that contains polar bonds can itself be non polar if the shape or the geometry of the molecule allows for bond polarity cancellation such as in the case of carbon dioxide, we have at 180 degrees, a positive to negative and a positive to negative. So using vector analysis, the magnitude of the dipole moment in one direction is completely canceled by the magnitude of the dipole moment in the opposite direction.

So this question is how can a molecule with polar bones, the non polar mom overall. And the answers this question essentially that the molecule has sort of a symmetric geology or molecular geometry. So there will be no polarities on either side of the molecule. And that the polarities basically will cancel out the dye for wounds more specifically. So we can say that we have this uh all of you here and it's going to be attached to for flooring atoms. And we know that flooring is a very electoral negative molecules so that it should have big polar polarity difference between this carbon and the flooring. And so we can mark this as having a negative type of woman on all four of these bonds. But we If we sort of picture is in 3D space we've seen at this these electron regions are in all four directions. And so it sort of starts cancelling out as they're being pulled in these directions are like really the furthest possible and opposite of each other. In that they really do not become polar as the entire molecule. Because now of these depot forces have cancelled out. And another example when this polar bonds will result in the polar molecules that instead of having this for it bond here, it would just be a long pair or something. And so these bonds will be pushed to this direction. But in this direction there isn't really a bond to cancel these type of woman's out. So this home, he would still be polar. And in essence any uh molecule with a lone pair on the central atom is probably going to be polar because there are no long hair floors on the other side to cancel this non pair of potion forced out.

The solvent is what is found in greatest amount and is considered to do the dissolving of the Salyut. The Salyut is typically in least amount and is considered to be what is dissolved so air we might think of nitrogenous, a solvent and oxygen. It's a Salyut oxygen and least amount sugar, water, water would be the solvent. Sugar would be the Salyut. And if we were to dissolve some grease in paint thinner to form a solution, the Greece would be the Salyut, and the paint thinner would be the solvent.

To create an homogeneous solution, we need to pick a solvent that has similar inter molecular forces to that of our substance. Motor oil is non polar, so we really need any non polar solvent to dissolve the motor oil In table. 13.3 Heck saying would be a good choice or dispersion forces would allow for the mixing ethanol is very polar because it's capable of hydrogen bonding. So we need a polar solvent such as water, also capable of hydrogen bonding. Where dispersion forces and hydrogen bonding allow for the mixing dispersion forces are always present. The next one is lard, which is non polar. So any non polar solvent should work. Such as heck saying again, where dispersion forces will allow for mixing potassium chloride is ionic and according to scalability rules, it is soluble in water. So we need a good polar solvents such as water that would allow for an homogeneous solution to be formed where we would have an ionic die pole or ionic hydrogen bonding inter molecular forces allowing for the dissolution of potassium chloride.


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