Question

In: Chemistry

The ΔHvap of a certain compound is 45.76 kJ·mol–1 and its ΔSvap is 84.68 J·mol–1·K–1. What...

The ΔHvap of a certain compound is 45.76 kJ·mol–1 and its ΔSvap is 84.68 J·mol–1·K–1. What is the boiling point of this compound?

Solutions

Expert Solution

Answer – Given, ∆Hvap = 45.76 kJ·mol-1 , ∆Svap = 84.68 J.mol-1.K-1

boiling point of this compound, T = ?

We know the formula

∆Svap = ∆Hvap / T

So, T = ∆Hvap /∆Svap

          = 45760 J.mol-1 / 84.68 J.mol-1.K-1

           = 540.4 K

In the degree Celsius boiling point of this compound is T = 540.4 K – 273.15 K

                                                                                       = 267.3oC


Related Solutions

The entropy of sublimation of a certain compound is 20.7 J K–1 mol–1 at its normal...
The entropy of sublimation of a certain compound is 20.7 J K–1 mol–1 at its normal sublimation point of 101 °C. Calculate the vapour pressure (in torr) of the compound at 9 °C. Assume that the enthalpy of sublimation is constant.
A compound distributes between benzene (solvent 1) and water (solvent 2) with a distribution coefficient, K...
A compound distributes between benzene (solvent 1) and water (solvent 2) with a distribution coefficient, K = 2.7. If 1.0g of the compound were dissolved in 100mL of water, what weight of compound could be extracted by THREE sequential 10-mL portions of benzene? What weight of compound could be extracted if ONE 30-mL portion of benzene were used. If the distribution constant, K were 0.5, for the distribution of a compound between benzene (solvent 1) and water (solvent 2), and...
A compound distributes between benzene (solvent 1) and water (solvent 2) with a distribution coefficient, K...
A compound distributes between benzene (solvent 1) and water (solvent 2) with a distribution coefficient, K = 2.7. If 1.0g of the compound were dissolved in 100mL of water, what weight of compound could be extracted by THREE sequential 10-mL portions of benzene? What weight of compound could be extracted if ONE 30-mL portion of benzene were used. If the distribution constant, K were 0.5, for the distribution of a compound between benzene (solvent 1) and water (solvent 2), and...
My compound is 2,4-Dimethyl-1-Pentanol 1.       Retrosynthetic analysis of your compound: What is a possible precursor?   What...
My compound is 2,4-Dimethyl-1-Pentanol 1.       Retrosynthetic analysis of your compound: What is a possible precursor?   What are the reagents you need to obtain your product when using this precursor?      2.       In a drawing, show the synthetic steps that lead from the precursor to your compound. Use curved arrows properly! 3.       Using your precursor, show mechanisms and products of a Markovnikov and an anti-Markovnikov addition. 4.       Using the materials obtained through Markovnikov and anti-Markovnikov additions to the precursor, discuss stereochemical aspects....
The rate constant for a certain reaction is k = 1.90×10−3 s−1 . If the initial...
The rate constant for a certain reaction is k = 1.90×10−3 s−1 . If the initial reactant concentration was 0.850 M, what will the concentration be after 15.0 minutes? A zero-order reaction has a constant rate of 2.80×10−4 M/s. If after 75.0 seconds the concentration has dropped to 9.00×10−2 M, what was the initial concentration? A zero-order reaction has a constant rate of 2.80×10−4M/s. If after 75.0 seconds the concentration has dropped to 9.00×10−2M, what was the initial concentration?
A certain compound, A, reacts to form products according to the reaction A → P. The...
A certain compound, A, reacts to form products according to the reaction A → P. The amount of A is measured as a function of time under a variety of different conditions and the tabulated results are shown here: 25.0 °C 35.0 °C 45.0 °C Time (s) [A] (M) [A] (M) [A] (M)    0 1.000 1.000 1.000 10 0.779 0.662 0.561 20 0.591 0.461 0.312 30 0.453 0.306 0.177 40 0.338 0.208 0.100 50 0.259 0.136 0.057 60 0.200...
. A chemist wishes to detect an impurity in a certain compound that she is making....
. A chemist wishes to detect an impurity in a certain compound that she is making. There is a test that detects an impurity with probability 0.92; however, This test indicates that an impurity is there when it is not about 5% of the time. The chemist produces compounds with the impurity about 15% of the time. A compound is selected at random from the chemist’s output. The test indicates that an impurity is present. What is the conditional probability...
In a certain compound, a mystery element, M, has sp2 hybridization. The orbital diagram for its valence electrons is shown below
In a certain compound, a mystery element, M, has sp2 hybridization. The orbital diagram for its valence electrons is shown below. How many σ bonds, π bonds and lone pairs does atom M form in this compound?σ π Lone pairsA) 1 2 0B) 0 3 1C) 1 1 0D) 2 0 2E) 2 1 1
K CONSTANT EQUILIBRIUM What does it mean when K=1 and when K= 0
K CONSTANT EQUILIBRIUM What does it mean when K=1 and when K= 0
1) At a certain temperature, 322 K, Kp for the reaction, Cl2(g) <=> 2 Cl(g), is...
1) At a certain temperature, 322 K, Kp for the reaction, Cl2(g) <=> 2 Cl(g), is 7.82 x 10-60. Calculate the value of ΔGo in kJ for the reaction at this temperature. 2) The equilibrium constant for the reaction, 2 Fe3+(aq) + Hg22+(aq) <=> 2 Fe2+(aq) + 2 Hg2+(aq) is 9.1 x 10-6(aq) at 298 K. Calculate ΔG in J when {Fe3+(aq)} = 0.375 {Hg22+(aq)} = 0.051 {Fe2+(aq)} = 0.021 {Hg2+(aq)} = 0.06
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT