6. Coal tar fuels are liquid fuels obtained by blending coal tar distillation products such as carbolic oil, naphthalene oil, creosote oil, anthracene oil and medium pitch. A sample elemental analysis shows 85.9% C, 6.3% H, 1.2% S, 5.5% O and 1.1% N. If this fuel is burned in excess air at 30°C and 755 mm Hg with 90% RH, it produces a burner gas containing 10.64% CO2, 3.19 % CO and 0.64% H2. Assuming negligible N and S, Calculate: a) % excess air (27.18%) b) Complete orsat analysis of burner gas (6.41% O2 , 79.15% N2 ) c) m' stack gas (200 °C , 100 kPa)/kg çoal tar (22.03)

Estimate the heat of vaporization of diethyl either normal boiling point using troutons rule and Chen's rule and compare the results with a tabulated value of this quantity. Calculate the percentage error that results from using each estimation. The estimate the change in the heat of vaporization at 100°c using the Watson correlation.

Potassium fluotitanate (K₂TiF₆), a starting material forproducing other titanium salts, is made by dissolvingtitanium(IV) oxide in concentrated HF, adding aqueous KF, andthen heating to dryness to drive off excess HF. The impure solidis recrystallized by dissolving in hot water and then cooling to 0°C, which leaves excess KF in solution. For the reaction of 5.00 g of TiO₂, 250. mL of hot water is used to recrystallize theproduct. How many grams of purified K₂TiF₆ are obtained?(Solubility of K₂TiF₆ in water at 0°C is 0.60 g/100)

What is the relative humidity of a 22°C air sample with a mixing ratio of 8 g/kg? (Round to the nearest whole number)

13.4 Use the Dülong formula to calculate the gross and net heating values of coal having the following composition: 9.0% C = 75%, H = 5%, N = 1%, O = 9%, S = 1%, Moisture = 2.0%, Ash = Take the latent heat of vaporization of water to be 2370 kJ/kg of water.

3. A fuel gas made up of a mixture of methane and ethane is burned in excess air and the heat given off is used to calcine completely a stone containing 95% CACO, and 5% inerts. Complete analysis of the kiln gas shows 21.42% CO2 , 5.54% O2, 62.54% N2 and 10.5% H20. Calculate the analysis of the fuel gas and the Lime-fuel ratio. 10.77 kg lime/kg fuel) (75% CH4 and 25% C,H6 ;

A gas containing argon, benzene, toluene is in equilibrium with 35 mol% Benzene and 65 mol % toluene liquid mixture at 85 C degrees and 10 atm. Determine the gas phase composition.

Q2: The feed to a distillation column is separated into net overhead product containing nothing with a boiling point higher than isobutane and bottoms containing nothing with a boiling point below that of propane. Hint: In the overhead there is no n-C5H12 or n-C4H10, and in the bottoms there in no C2H4, C2H6, or C3H6. The composition of the feed is mole % Ethylene 2.0 Ethane 3.0 Propylene Propane Isobutane 5.0 15.0 25.0 n-Butane 35.0 n-Pentane 15.0 Total 100.0 The concentration of isobutane in the overhead is 5.0 mole percent, and the concentration of propane in the bottoms is 0.8 mole percent. 1. Draw a completely labeled flowchart for the above process 2. Do the degree of freedom analysis for the overall process

The table below shows the flue gas composition (in gmol) from the combustion of fuel oil: 0₂ N₂ CO2 H₂O 0.092 2.054 0.421 0.576 Determine the wet and dry analysis of the products of combustion.

43. A liquid is observed to boil at 120°C under a pressure of 725 mm. Its molar heat of vaporization is 8200 cal/mole. Calculate the normal boiling point of the liquid.