Consider the following reaction: 10 KNO3(s) + 8 C(s) + 3 S(s) → 2 K2CO3(s) + 3 K,SO:(s) + 6 CO2(g) + 5 N2(g) If you mix 0.75 kg of KNO3 with 0.75 kg of sulfur in the presence of excess carbon and the reaction proceeds with 55% yield, what mass of gas-phase products (i.e., CO2 plus N2) will leave the reaction mixture? Show complete work including all calculations, units, appropriate significant figures, and 1-5 key words of explanation at each step of your calculation.

The catalytic reforming of methane with steam at high temperature and atmospheric pressure is one way to prepare hydrogen for the production of NH3:CH4(g)  +  H2O(g)   CO(g)  +  3 H2(g) Other reaction:CO(g)  +  H2O(g)   CO2(g)  + H2(g) If you begin with 990 kg of CH4 and 2300 kg of H2O and you obtain 430 kg of H2 and 2080 kg of CO2 at 400oC and 1 atm, calculate the total volume of the gas collected after the reactions.

As reported in US Patent 4203923, cyclohexanone is an important chemical raw material in the production of nylon intermediates. The separation and purification section for cyclohexanone production usually done through a series of distillation units. Liquid mixture of cyclohexanone (1) and phenol (2) was reported to exist in equilibrium with its vapor at 144 °C (417.15K). The system conforms closely to Modified Raoult’s Law. The mixture forms azeotrope at composition of 0.695. (Refer Table) (a) Provide a sketch that clearly shows that the system exhibits azeotrope(α12)x1=0 = P1sat eA / P2sat and (α12)x1=1 = P1sat / P2sat eA (b) State Paz and sketch a P-xy diagram of the system

1. An impure sample of compound A is contaminated with two impurities B and C. The sample is to be purified by recrystallization using ethanol as the solvent. The solubility properties of the three components are summarized below. Solubility in Solubility in ethanol Solubility in 50 mL Solubility in 50 mL ethanol at -78 °C at - 0°C ethanol at -78 °C ethanol at - 0°C (g) (g) Compound A 0.12 g/mL 0.02 g/mL Impurity B 0.58 g/mL 0.04 g/mL Impurity C 0.005 g/mL 0.0003 g/mL The impure (7.5 g) sample contains 5.0 g of compound A, 1.5 g of B and 1.0 g of C and is recrystallized using 50 mL of ethanol. The sample is boiled with 50 mL of ethanol, filtered by gravity and then cooled in ice and filtered by suction. a) How much compound A should be obtained as the final product? Will the sample be contaminated with any of the impurities? Explain (using calculations to support your answer-fill in the missing masses in the table above). Hint: For this question you should calculate the mass of each…

The decomposition of N,0, can be described by the equation 2 N,0,(soln) → 4NO, (soln) + O,(g) Consider the data in the table for the reaction at 45 °C in carbon tetrachloride solution. 1 (s) [N,O3] (M) 2.576 215 2.250 456 1.934 755 1.602 Given the data, calculate the average rate of reaction for each successive time interval. What is the average rate of reaction for the time interval from 0 s to 215 s? average rate of reaction: M/s What is the average rate of reaction for the time interval from 215 s to 456 s? average rate of reaction: M/s What is the average rate of reaction for the time interval from 456 s to 755 s? average rate of reaction: M/s

a) Hydrogen is formed by steam cracking of methane according to the reaction: CH, (g)+ 2H,0(g)→CO, (g) + 4H, (g) The reaction reaches equilibrium at 2000 kPa and 700 K. Initially the reactant consists of methane and steam in stoichiometric proportions. The standard energy change of reaction at 700 K is -17.6 kJ/mol. By assuming that the equilibrium mixture behaves as a non-ideal solution and the fugacity coefficient of each component is given as follow: Фен, — 0.92 P40 = 0.81 Peo =0.95 P4, = 0.88 Determine the compositions of the product. At the same temperature, if the pressure is doubled, predict the effect on the compositions of the product by explaining using relevant equations.

A change in a system occurs such that 40.6 J of heat flows in to the system and 48.0 J of work is done by the system. What is the change in internal energy of the system? O a.-7.4 J O b. -88.6 J O c. 7.4 J O d. 88.6 J O e. -48.0 J

(a) Consider the following chemical reaction: 3FE203(s) + CO(g) → 2Fe304(s) + CO2(g) AH° = ? Use the following thermochemical data to determine the enthalpy change of this reaction. (6) 2FE2O3 (s) AH° = -1652 kJ 4Fe(s) + 302(g) C(s,graphite) + ½O2(g) → CO(g) 3Fe(s) + 202 (g) → CO2(g) AH° = -110.5 kJ Fe304(s) C(s,graphite) + O2(g) AH° = -1117 kJ AH° = +395.5 kJ (b) What is the standard enthalpy of formation of carbon dioxide? (2)

A student determines the value of the equilibrium constant to be 1.98×10-5 for the following reaction.CO2(g) + H2(g)CO(g) + H2O(g)Based on this value of Keq:G° for this reaction is expected to be (greater, less) fill in the blank 1 than zero.Calculate the free energy change for the reaction of 1.74 moles of CO2(g) at standard conditions at 298K.     G°rxn =  kJ

Solve correctly please.