Match the following physical and chemical properties with octane, C₈H₁₈ found in gasoline, or magnesium sulfate, MgSO₄ also called Epsom salts:
d. is a liquid at room temperature

Question

Match the following physical and chemical properties with octane, C₈H₁₈ found in gasoline, or magnesium sulfate, MgSO₄ also called Epsom salts:

d. is a liquid at room temperature

Accepted Answer

All right. Hi, everyone. So this question says that no name or C nine H 20 is a compound found in kerosene. While sodium bicarbonate and a HCO three is a compound known as baking soda, which is most likely to exist as a liquid at room temperature. Option A says sodium bicarbonate. Option B says no name. Option C says both and option D says neither. Now to understand this question. Recall first and foremost that the physical state of any given substance is a consequence of what intermolecular forces or IMF S are at play IMF are interactions between molecules or particles that create an attraction between them. Right. IMF S are forces that make molecules or particles gravitate towards each other or stick closer to each other. Now, the strength of an IMF is what determines the physical state of a given substance at room temperature, for example, right, very strong IMF S or rather compounds that contain very strong IMF S are generally expected to be a solid at room temperature because these very strong intermolecular forces compel these molecules or particles to stick very close together, which is characteristic of assault. Now, on the other hand, if we have relatively weak intermolecular forces between molecules or particles, then those compound are expected to be gasses at room temperature. Because by contrast, if the intermolecular force is relatively weak, then molecules or particles are going to be far away from each other, right, they're not going to stick together, so to speak. Now, liquids on the other hand, are somewhere in between. But with this in mind, recall that the strongest intermolecular forces are actually ionic bonds because ionic bonds involve electrostatic interactions between a species that has a positive charge and one that has a negative charge. So, ionic compounds are generally expected to be solids at room temperature because those I MFS are very strong. Now, when we examine the structures of both of these compounds, we can get a better idea on what IMF s must be present. For example, starting with sodium bicarbonate or NAHC three. Now recall that sodium being a metal is going to be or is going to exist as a cion with a positive one chart. On the other hand, bicarbonate or HC three is a poly atomic ion and it exists with a negative charge. So that's HCO three negative one. So in this case, sodium bicarbonate is an ionic compound in which a cion, specifically sodium creates a very strong bond with an anion or specifically bicarbonate. So because of this, this incredibly strong intermolecular force, sodium bicarbonate would be a solid at room temperature. So we can contrast this with no name now. No name is considered a hydrocarbon because recall that hydrocarbons are chemical compounds composed only of carbon and hydrogen apps. Now, because carbon and hydrogen are both non metals. The structure of no name contains only COVID bonds and specifically hydrocarbons are characteristically nonpolar. And the reason why this is important is because if you recall nonpolar compounds are held together by relatively weak dispersion forces. So because the only IMF present in the structure of no name is the relatively weak dispersion force, then we would normally expect no name to exist as a gas. However, what I want to point out here is that the structure of no name is actually relatively large because it is a chain composing of nine carpets recall that a dispersion force can be made slightly stronger if the molecule itself is larger. And the reason for this is because larger molecules would have more surface area or this interaction would take place. So because of this, the dispersion force becomes slightly stronger due to the increase in surface area. So because of this, no name is more likely to exist as a liquid. And this makes sense because recall that kerosene does in fact exist as a liquid, often used for lamps as a fuel source for lamps. And there you have it right. Our answer would be option B in the multiple choice because no name is most likely to exist as a liquid at room temperature. So with that being said, thank you so very much for watching and I hope you found this helpful.

Match the following physical and chemical properties with octane, C₈H₁₈ found in gasoline, or magnesium sulfate, MgSO₄ also called Epsom salts:
d. is a liquid at room temperature

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Match the following physical and chemical properties with octane, C8H18 found in gasoline, or magnesium sulfate, MgSO4 also called Epsom salts:d. is a liquid at room temperature

Verified video answer for a similar problem:

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Match the following physical and chemical properties with octane, C₈H₁₈ found in gasoline, or magnesium sulfate, MgSO₄ also called Epsom salts:
d. is a liquid at room temperature