Match the following physical and chemical properties with potassium chloride, KCl, used in salt substitutes, or butane, C₄H₁₀ used in lighters:
a. melts at -138°C

Question

Match the following physical and chemical properties with potassium chloride, KCl, used in salt substitutes, or butane, C₄H₁₀ used in lighters:

a. melts at -138°C

Accepted Answer

All right. Hi, everyone. So this question says, does the following property match with cyclohexane C six H 12 or magnesium bromide M GB R two has a melting point of 6.47 °C. So for the sake of answering this question, we can actually simplify this issue into a comparison of organic versus inorganic compounds. Recall that an organic compound is one that contains carbon hydrogen and or carbon carbon bonds, no other atoms may be present. But if no carbon, hydrogen or carbon carbon bonds are present, then the compound itself is inorganic. Now, the reason why this comparison can be made is because organic compounds have very characteristic properties that can be compared to in organic compounds. One of which is that the melting point or MP for short of organic compounds are relatively low compared to inorganic compounds. And if we examine the melting point given of 6.47 °C, that is quite low, right? Because notice how 6.47 °C is below room temperature. So a melting point of 6.47 would be expected from an organic compound given how low it happens to be. So at this point, we can compare the structures of cyclohexane and magnesium bromide to determine which is inorganic and which is organic starting off with cyclohexane. Notice how cyclohexane contains only carbon and hydrogen atoms. So therefore, it must contain carbon hydrogen and carbon carbon bonds making cyclohexane organic. Whereas magnesium bromide must be inorganic because it contains neither carbon nor hydrogen. So because of this, a melting point of 6.47 °C would be expected from cyclohexane or Z six H 12 because organic compounds have characteristically low melting points and there you have it. 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 potassium chloride, KCl, used in salt substitutes, or butane, C₄H₁₀ used in lighters:
<IMAGE>
a. melts at -138°C

Verified video answer for a similar problem:

Key Concepts

Physical Properties of Substances

Chemical Properties and Composition

Ionic vs. Covalent Compounds