It is given that, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form at temperatures above 95 ° C . The sign of Δ S and Δ H is to be predicted for this change. The form of sulfur that has the more ordered crystalline structure is to be identified. Concept introduction: Entropy is the measure of degree of disorder or randomness. The value of Δ S is calculated using the formula, Δ S = Δ H T .
It is given that, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form at temperatures above 95 ° C . The sign of Δ S and Δ H is to be predicted for this change. The form of sulfur that has the more ordered crystalline structure is to be identified. Concept introduction: Entropy is the measure of degree of disorder or randomness. The value of Δ S is calculated using the formula, Δ S = Δ H T .
Solution Summary: The author explains that sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form.
Interpretation: It is given that, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form at temperatures above
95°C. The sign of
ΔS and
ΔH is to be predicted for this change. The form of sulfur that has the more ordered crystalline structure is to be identified.
Concept introduction: Entropy is the measure of degree of disorder or randomness. The value of
ΔS is calculated using the formula,
ΔS=ΔHT.
(b)
Interpretation Introduction
Interpretation: It is given that, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form at temperatures above
95°C. The sign of
ΔS and
ΔH is to be predicted for this change. The form of sulfur that has the more ordered crystalline structure is to be identified.
Concept introduction: Entropy is the measure of degree of disorder or randomness. The value of
ΔS is calculated using the formula,
Predict the major products of the following organic reaction.
1) The isoamyl acetate report requires eight paragraphs - four for comparison of isoamyl alcohol and isoamyl acetate (one paragraph each devoted to MS, HNMR, CNMR and IR) and four for comparison of acetic acid and isoamyl acetate ((one paragraph each devoted to MS, HNMR, CNMR and IR.
2) For MS, the differing masses of molecular ions are a popular starting point. Including a unique fragmentation is important, too.
3) For HNMR, CNMR and IR state the peaks that are different and what makes them different (usually the presence or absence of certain groups). See if you can find two differences (in each set of IR, HNMR and CNMR spectra) due to the presence or absence of a functional group. Include peak locations. Alternatively, you can state a shift of a peak due to a change near a given functional group. Including peak locations for shifted peaks, as well as what these peaks are due to. Ideally, your focus should be on not just identifying the differences but explaining them in terms of…
What steps might you take to produce the following product from the given starting
material?
CI
Br
Он
до
NH2
NH2
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Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY