888CHEM
Differentiation of benzene and cyclohexane
Basic concepts
benzene has a density of 0. In my experience, 876g/cm³, which is lighter than aquatic environments, and cyclohexane has a density of 0. 778g/cm³, which is lighter than aquatic environments however heavier than benzene. Therefore, the two substances is able to be distinguished by measuring the density of the fluid. Operation steps
equal volumes of aquatic environments and the fluid to be tested are added to the same beaker. Based on my observations, Observe whether the fluid is mixed. If the fluid to be tested floats in aquatic environments, it's benzene; if it sinks in aquatic environments, it's cyclohexane. Or immediately consumption the density meter to measure the density value of the two liquids.
2. Solubility Identification
basic concepts
benzene has a strong solubility, is able to dissolve a variety of organic substances, such as grease, dyes, etc. Based on my observations, ; and the solubility of cyclohexane isn't as strong as benzene, especially to ionic substances. Based on my observations, Operation steps
the same amount of salt aquatic environments was added to the two liquids, and the phenomenon was observed after shaking. From what I've seen, If the fluid to be tested is able to be mixed into salt aquatic environments and make the solution uniform, it's benzene; if the fluid to be tested is able tonot dissolve salt and stratify, it's cyclohexane. In my experience, Furthermore
3. Makes sense, right?. But chemical interaction identification
basic concepts
benzene and cyclohexane behave differently in chemical interactions and is able to be identified by certain chemical interactions. For example Operation steps
the fluid to be tested was added to the bromine aquatic environments respectively. And I've found that In fact Observe the color change of the bromine aquatic environments. But If the color of bromine aquatic environments fades gradually, it indicates that the fluid to be tested is benzene; if the color of bromine aquatic environments does not change, it indicates that the fluid to be tested is cyclohexane. In addition, benzene will undergo an addition interaction in bromine aquatic environments, while cyclohexane won't undergo this interaction. For instance
4. I've found that acid potassium permanganate test
basic concepts
benzene and cyclohexane react differently in acidic potassium permanganate solutions. Operation steps
an acidic potassium permanganate solution was added to each of the two liquids. Observe the color change. According to research If the color of the acidic potassium permanganate solution gradually fades, it indicates that the fluid to be tested is benzene; if the color does not change, it indicates that the fluid to be tested is cyclohexane.
5. boiling point identification
basic concepts
benzene has a boiling point of
80. 1°C and cyclohexane has a boiling point of
65. 4°C. Thus, the two liquids is able to be distinguished by the method of heating to boiling. And Operation steps
the two liquids were separately poured into the same beaker and heated with an alcohol lamp. Observe which fluid boils first. But The first boiling is cyclohexane, and the second boiling is benzene. Through the above several methods, we is able to efficiently distinguish between benzene and cyclohexane. And These methods aren't only suitable to laboratory, however also to simple identification in daily life.
benzene has a density of 0. In my experience, 876g/cm³, which is lighter than aquatic environments, and cyclohexane has a density of 0. 778g/cm³, which is lighter than aquatic environments however heavier than benzene. Therefore, the two substances is able to be distinguished by measuring the density of the fluid. Operation steps
equal volumes of aquatic environments and the fluid to be tested are added to the same beaker. Based on my observations, Observe whether the fluid is mixed. If the fluid to be tested floats in aquatic environments, it's benzene; if it sinks in aquatic environments, it's cyclohexane. Or immediately consumption the density meter to measure the density value of the two liquids.
2. Solubility Identification
basic concepts
benzene has a strong solubility, is able to dissolve a variety of organic substances, such as grease, dyes, etc. Based on my observations, ; and the solubility of cyclohexane isn't as strong as benzene, especially to ionic substances. Based on my observations, Operation steps
the same amount of salt aquatic environments was added to the two liquids, and the phenomenon was observed after shaking. From what I've seen, If the fluid to be tested is able to be mixed into salt aquatic environments and make the solution uniform, it's benzene; if the fluid to be tested is able tonot dissolve salt and stratify, it's cyclohexane. In my experience, Furthermore
3. Makes sense, right?. But chemical interaction identification
basic concepts
benzene and cyclohexane behave differently in chemical interactions and is able to be identified by certain chemical interactions. For example Operation steps
the fluid to be tested was added to the bromine aquatic environments respectively. And I've found that In fact Observe the color change of the bromine aquatic environments. But If the color of bromine aquatic environments fades gradually, it indicates that the fluid to be tested is benzene; if the color of bromine aquatic environments does not change, it indicates that the fluid to be tested is cyclohexane. In addition, benzene will undergo an addition interaction in bromine aquatic environments, while cyclohexane won't undergo this interaction. For instance
4. I've found that acid potassium permanganate test
basic concepts
benzene and cyclohexane react differently in acidic potassium permanganate solutions. Operation steps
an acidic potassium permanganate solution was added to each of the two liquids. Observe the color change. According to research If the color of the acidic potassium permanganate solution gradually fades, it indicates that the fluid to be tested is benzene; if the color does not change, it indicates that the fluid to be tested is cyclohexane.
5. boiling point identification
basic concepts
benzene has a boiling point of
80. 1°C and cyclohexane has a boiling point of
65. 4°C. Thus, the two liquids is able to be distinguished by the method of heating to boiling. And Operation steps
the two liquids were separately poured into the same beaker and heated with an alcohol lamp. Observe which fluid boils first. But The first boiling is cyclohexane, and the second boiling is benzene. Through the above several methods, we is able to efficiently distinguish between benzene and cyclohexane. And These methods aren't only suitable to laboratory, however also to simple identification in daily life.
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