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1 year ago

A phase diagram for elemental carbon is shown below.

Chemistry

1 answer:

olga55 [171]1 year ago

4 0

Answer:

C.) lowering the pressure

Explanation:

As you can see, the liquid and gas phases are stacked right on top of each other. Since temperature is on the x-axis, this means that these phases exist at the same temperature (disregarding any other variables). This means that changing the temperature would not change the liquid phase to the gas phase.

If we want to get the sample into the gas phase, we need to manipulate the sample based on the y-axis. To lower the sample into the gas phase, we need to lower the pressure, which is the variable on the y-axis. This will work because pressure decreases as you go down the y-axis.

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How does the energy of the activated complex compare with the energies of reactants and products? select one:

Free_Kalibri [48]

Answer:

Option d. it is higher than the energy of both reactants and products

Explanation:

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3 years ago

Explain how you would use ir spectroscopy to distinguish between 1-bromo-3-methyl-2-butene and 2-bromo-3-methyl-2-butene.

bulgar [2K]

Structures of 1-bromo-3-methyl-2-butene and 2-bromo-3-methyl-2-butene are shown below.

It can be seen that 1-bromo-3-methyl-2-butene is containing a C-H bond in which carbon is sp² hybridized (i.e. =C-H) while such bonding is absent in 2-bromo-3-methyl-2-butene.

So, as we know that the peak of C-H stretching of alkenes is found in the region of 3010-3100 cm⁻¹ with medium intensity. Therefore, 1-bromo-3-methyl-2-butene will show this peak and 2-bromo-3-methyl-2-butene will lack this peak in IR spectrum.

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2 years ago