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- The balancing equation for conversion of oxygen to ozone has a very small value of Kc. 3O2 (g)= 2 O3 (g) Kc= 6.25 x 10-58 a. Calculate the value of Kc if the equation is written as 3/2 O2 (g)= O3 (g) b. Calculate the value of Kc for the conversion of ozone to oxygen 2 O3 (g) = 3 O2 (g)For the following table fill in the missing values and calculate the theoretical yield. A + 2B à C moles 0.00242 0.00242 ?_________ MW ?_________ 98.06 164.16 g ?_________ ?__0.00002467_______ ?_________ mL 0.20 d(g/mL) 0.80A double displacement reaction occurs when an aqueous solution of silver chloride (AgCl) and sodium sulfate (Na2SO4) were mixed. A white precipitate of silver sulfate (Ag2SO4) and sodium chloride are formed 3. If 85 grams of barium chloride react with 75 grams of sodium sulfate which reagent is the limiting reagent? (Show work) 4. How many moles of barium sulfate would theoretically be produced during this reaction? (show work) 5. If 12.5g of silver sulfate were actually recovered in this experiment, what is the % yield? (Show work)
- QUESTION 4 Calculate ΔG°rxn for the reaction below at 25.0°C. 2H2O2 (ℓ) → 2H2O (ℓ) + O2 (g) Report your answer in kJ/mol to two decimal places. ΔG°f (kJ/mol) H2O2 (ℓ) -120.35 H2O (ℓ) -237.13For items 1-3, refer to the equation: CH4(g) + 2O2(g) → 2H2O(l) + CO2(g), with ΔH equal to -809.94 kJ/mol.1. Is the reaction heat-producing (exothermic) or heat-absorbing(endothermic)?2. How many moles of liquid water (H2O(l)) will be produced upon combustion of 3 moles of methane gas (CH4(g))?3. Calculate the ΔH if 5g of methane gas was combusted. With solutions and explanation.For items 1-3, refer to the equation: CH4(g) + 2O2(g) → 2H2O(l) + CO2(g), with ΔH equal to -809.94 kJ/mol.1. Is the reaction heat-producing (exothermic) or heat-absorbing(endothermic)?2. How many moles of liquid water (H2O(l)) will be produced upon combustion of 3 moles of methane gas (CH4(g))?3. Calculate the ΔH if 5g of methane gas was combusted.For the following items, choose the letter of the correct answer. Write it on your answer sheet in ALL UPPERCASE letters. 4. A process in which there is no thermal energy exchanged between a system and its surroundings is called a/an:a. isothermal process b. isobaric processc. diathermic process d. adiabatic process5. According to Hess’ Law, the amount of energy expenditure for the same end-product will vary dependent on the number of steps.a. Statement above is true.b. Statement above is incorrect.c. Statement above is indeterminate.d. Statement above lacks varied data to make a judgement. Please answer all the questions.
- For items 1-3, refer to the equation: CH4(g) + 2O2(g) → 2H2O(l) + CO2(g), with ΔH equal to -809.94 kJ/mol.1. Is the reaction heat-producing (exothermic) or heat-absorbing(endothermic)?2. How many moles of liquid water (H2O(l)) will be produced upon combustion of 3 moles of methane gas (CH4(g))?3. Calculate the ΔH if 5g of methane gas was combusted.You begin the reaction with 6.5 mL of t-butyl alcohol (density= 0.775 grams/mL) and 15 mL of concentrated HCl (1.189 grams/mL, 38% HCl) in a distillation flask. Calculate the limiting reagent and the theroretical yield of the product (t-butyl chloride) for this reaction. (Hint:Your starting amount of HCl is 38% of the starting smount).Using the provided data table, calculate ΔrxnH for the following reactions:a) 2O3(g) ⇌ 3O2(g)b) H2S(g) + 3/2 O2(g) ⇌ H2O(ℓ) + SO2(g) Compound ΔfH (kJ mol–1)H2O(ℓ) –285.83H2S (g) –20.6O2 (g) 0O3 (g) 142.7SO2 (g) –296.81
- A double displacement reaction occurs when an aqueous solution of barium chloride (BaCl2) and sodium sulfate (Na2SO4) were mixed. A white precipitate of barium sulfate (BaSO4) and sodium chloride are formed If 55 grams of barium chloride react with 55 grams of sodium sulfate which reagent is the limiting reagent? (Show work) How many moles of barium sulfate would theoretically be produced during this reaction? (show work) If 25g of barium sulfate were actually recovered in this experiment, what is the % yield? (Show work)Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene and chlorine. CCl4(g) + (1/2)O2(g) <--> COCl2(g) + Cl2(g), Kc = 4.4 x 109 at 1,000 KCalculate Kc for the reaction 2CCl4(g) + O2(g) <--> 2COCl2(g) + 2Cl2(g). (2 sig figs)Carbon dioxide gas, CO2(g), is generated in the combustion of a sample of ethane (C2H6). This CO2 is all bubbled into aqueous barium hydroxide to be absorbed to produce 0.506 g of solid barium carbonate precipitate. How many grams of ethane (C2H6) were initially burned? The absorption-precipitation reaction is given by [CO2(g) + Ba(OH)2(aq) BaCO3(s) + H2O(l)].