Question

In: Chemistry

The enthalpy of sublimation (direct conversion from solid to gas) of carbon dioxide is 26.1 kJ/mol....

The enthalpy of sublimation (direct conversion from solid to gas) of carbon dioxide is 26.1 kJ/mol. What value will the enthalpy of deposition (direct conversion from gas to solid) have? Use 3 significant figures and units of kJ/mol. The enthalpy of sublimation (direct conversion from solid to gas) of carbon dioxide is 26.1 kJ/mol.

How much energy is required to sublimate 8.3 kg of carbon dioxide? Give your answer in kJ. The mass of carbon dioxide that shows up in this problem should have 2 sig figs, assume it does for rounding purposes.

Solutions

Expert Solution

the enthalpy of deposition = reverse of The enthalpy of sublimation

the enthalpy of deposition = - 26.1 kJ / mol

mass of CO2 = 8.3 kg = 8300 g

molar mass of CO2 = 44 g / mol

moles of CO2 = 8300 / 44

                      = 188.6

heat required = ( 26.1 kJ / mol ) x 188.6 mol

                       = 4923 kJ

                   = 4.9 x 10^3 kJ

                                                           

queen_honey_blossom answered 2 years ago
Next > < Previous

Related Solutions

The enthalpy of combustion of solid carbon to form carbon dioxide is 2393.7 kJ/mol carbon, and...
The enthalpy of combustion of solid carbon to form carbon dioxide is 2393.7 kJ/mol carbon, and the enthalpy of combustion of carbon monoxide to form carbon dioxide is 2283.3 kJ/ mol CO. Use these data to calculate DH for the reaction 2C + O2 > 2CO
Solid diiodine pentoxide reacts with carbon monoxide gas to form solid iodine and carbon dioxide gas....
Solid diiodine pentoxide reacts with carbon monoxide gas to form solid iodine and carbon dioxide gas. How much solid iodine is produced when 50.0 g of diiodine pentoxide reacts with excess carbon monoxide?
According to the ideal gas law, a 1.041 mol sample of carbon dioxide gas in a...
According to the ideal gas law, a 1.041 mol sample of carbon dioxide gas in a 1.016 L container at 270.0 K should exert a pressure of 22.70 atm. By what percent does the pressure calculated using the van der Waals' equation differ from the ideal pressure? For CO2 gas, a = 3.592 L2atm/mol2 and b = 4.267×10-2 L/mol. % Hint: % difference = 100×(P ideal - Pvan der Waals) / P ideal
Solid iron (III) oxide reacts with solid carbon to form iron metal and carbon dioxide gas....
Solid iron (III) oxide reacts with solid carbon to form iron metal and carbon dioxide gas. (A) Write the balanced chemical equation for this reaction, including states of matter. (B) 22.34g of iron (III) oxide produces a 41.04% yield of carbon dioxide. How many grams of carbon dioxide are produced?
The molar enthalpy of fusion of solid copper is 13.0 kJ mol-1, and the molar entropy...
The molar enthalpy of fusion of solid copper is 13.0 kJ mol-1, and the molar entropy of fusion is 9.58 J K-1 mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of copper at 1.39×103 K. kJ (b) Calculate the Gibbs free energy change for the conversion of 4.27 mol of solid copper to liquid copper at 1.39×103 K. kJ (c) Will copper melt spontaneously at 1.39×103 K? _____Yes No (d) At what temperature are...
Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the...
Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→CO2(g). When dry ice is added to warm water, heat from the water causes the dry ice to sublime more quickly. The evaporating carbon dioxide produces a dense fog often used to create special effects. In a simple dry ice fog machine, dry ice is added to warm water in a Styrofoam cooler. The dry ice produces fog until it evaporates away,...
Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the...
Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→CO2(g). When dry ice is added to warm water, heat from the water causes the dry ice to sublime more quickly. The evaporating carbon dioxide produces a dense fog often used to create special effects. In a simple dry ice fog machine, dry ice is added to warm water in a Styrofoam cooler. The dry ice produces fog until it evaporates away,...
An equilibrium mixture contains 0.6500.650 mol of each of the products (carbon dioxide and hydrogen gas)...
An equilibrium mixture contains 0.6500.650 mol of each of the products (carbon dioxide and hydrogen gas) and 0.2000.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00 L container. CO(g)+H2O(g)−⇀↽−CO2(g)+H2(g)CO(g)+H2O(g)↽−−⇀CO2(g)+H2(g) How many moles of carbon dioxide would have to be added at constant temperature and volume to increase the amount of carbon monoxide to 0.3000.300 mol once equilibrium has been reestablished?
Ethanol melts at -114.0 ∘C. The enthalpy of fusion is 5.02 kJ/mol and the enthalpy of...
Ethanol melts at -114.0 ∘C. The enthalpy of fusion is 5.02 kJ/mol and the enthalpy of vaporization is 38.6 kJ/mol. The specific heats of solid and liquid ethanol are 0.970 J/g⋅K and 2.30 J/g⋅K, respectively. How much heat is needed to convert 39.0 g of solid ethanol at -160.0 ∘C to liquid ethanol at -35.0 ∘C ? I am really confused on this, any help would be greatly appreciated. Thanks!
A chemist made six independent measurements of the sublimation point of carbon dioxide (the temperature at...
A chemist made six independent measurements of the sublimation point of carbon dioxide (the temperature at which it changes to dry ice). She obtained a sample mean of 196.64 K with a standard deviation of 0.67 K. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Use the Student’s t distribution to find a 95% confidence interval for the sublimation point of carbon dioxide. (Round the final answers to...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT