Freezing Point Lab Report

Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in 3.00 L container: 8.65 g C2H4, 11.2 g O2, and 5.68 g CH;CHO. 2 C2H4(g) + O2(g) = 2 CH;CHO(g) 1 Based on the given data, set up the expression for Qc and then evaluate it. Do not combine or simplify terms.

Methane and chlorine react to form chloroform and hydrogen chloride, like this: CH,(g)+3C1,(g) → CHCI,(g)+3HC1(g) The reaction is exothermic. Suppose a mixture of cCH, Cl, CHCI, and HCi has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. olo perturbation change in composition shift in equilibrium O to the right The temperature is lowered. O to the left The pressure of CHCI3 will ? O (none) O to the right O to the left The temperature is raised. The pressure of Cl2 will O (none)

Given C2HGO(g) + 302(g)=2CO2(g) + 3H20(g) Kp = 7.2 2C2H,O(g) + 502(g)= 4CO2(g) + 4H2O(g) Kp = 7.1 x 101 calculate K, for 2C2H6O(g) + O2(g)= 2C2H40(g) + 2H20(g) Report your answer with two significant figures. Do NOT include units in your answer.

Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in 4.00 L container: 26.4 g CO, 6.35 g H, and 22.1 g CH,OH. Co(g) + 2 H,(g) = CH,OH(g) 1 Based on the given data, set up the expression for Qc and then evaluate it. Do not combine or simplify terms. Qc SRESET [0.236] [0.786]? [0.172] [0.786] [3.14] [1.57] [0.943] [0.690] [0.236]? [0.172]? [3.14] [1.57] [0.943]? [0.690]? 1.18 0.927 0.848 1.08

Consider the reaction: Nio (s) + CO (9) = Ni (s) + CO2 (g) K. =4000.0 at 1500 K When calculating the answer, do not round to the appropriate number of significant figures until the last calculation step.

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Methane and chlorine react to form chloroform and hydrogen chloride, like this: CH4(g) + 3Cl₂(g) → CHC13(g) + 3HCl(g) The reaction is exothermic. Suppose a mixture of CH4, C1₂, CHC13 and HCl has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation The temperature is lowered. change in composition The pressure of CH4 will The temperature is raised. The pressure of CHCl3 will ✓ ? go up. go down. not change. ? ↑ shift in equilibrium O X to the right to the left (none) to the right to the left (none) Ś

1.Physical or chemical change that occurs with no outside assistanceSuccessives ProcessesSpontaneous ProcessesChemical ProcessesTransient Processes2. Determine the “disorder of the system” NH3 (g) → NH3 (aq) NegativePositiveDecreaseIncrease3. When does “the measure of the disorder of a system” increase?greater product molecules than reactant moleculesTemperature decreasePhase Change form solid to gasWhen a substance is formed from parts4. Determine the “disorder of the system” FeS (s) → Fe2+(aq) + S2-(aq)Decrease Positive Negative Increase5. 4. In a________, changes occur to the fundamental particles of the nucleus of an individual atom which means that the atom changes from one element to another.Nuclear FissionChemical ReactionNuclear ReactionNeutral Reaction

Methane and chlorine react to form chloroform and hydrogen chloride, like this: CH (g)+3Cl,(g) → CHCI3(g)+3HCI(g) The reaction is exothermic. Suppose a mixture of CH, Cl,, CHCI, and HCl has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium O to the right The temperature is lowered. O to the left The pressure of CHA will O (none) O to the right O to the left The temperature is raised. The pressure of CHCI3 will ? O (none) Check O 2021 McGraw-Hill Education, All Rights Reserved Terms of Use Pacy Explanation hp

Two students prepared aqueous solutions of LiCl and measured the properties, as shown in the table above. Both students observed that the solid LiCl readily dissolved in H2O. The students drew particle diagrams to explain the changes in the enthalpy and entropy of dissolution for LiCl based on their results and observations. Based on this information, the better particle diagram was drawn by which student, and why is that diagram more accurate? (see attached image)   a.) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl− ions causing an increase in entropy.   b.) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+and Cl−ions indicating that the dissolution of LiCl is exothermic. c.) The better particle diagram was drawn by Student 2 because it shows that LiCl does not dissociate, resulting in a decrease in entropy for the dissolution of LiCl.…

The production of 1,3-butadiene can be carried out by the dehydrogenation of n-butane: C 4H 10 (9) H 2C=CHHC=CH 2 (g) + 2 H 2 (g) The reaction is carried out at 925 K and 0.5 bar pressure. Starting with pure n-butane gas it comes to equilibrium. At 925 K the equilibrium constant (K) of the reaction is 0.30. Assuming ideal gases, calculate the fractional conversion of n-butane at equilibrium. 0.29 0.41 0.52 0.63 0.71 0.85 OO

Consider the following reversible reaction at equilibrium: C6H12O6(aq) + 6 O2(g)      6 CO2(g) + 6 H2O(l). Given that this reaction is exothermic, if heat is added to the equilibrium system, how is the stress relieved?

Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in 4.00 L container: 26.4 g CO, 6.35 g H₂, and 22.1 g CH₂OH. Qc CO(g) + 2 H₂(g) → CH₂OH(g) = Based on the given data, set up the expression for Qc. Each reaction participant must be represented by one tile. Do not combine terms. Once the expression is constructed, solve for Qc. = 1 =

please see attached image

Nitrogen and oxygen react to form nitrogen monoxide, like this: N½(9)+O2(g) → 2 NO(g) The reaction is endothermic. Suppose a mixture of N,, O, and NO has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium to the right to the left The temperature is raised. The pressure of N, will v ? go up. (none) go down. not change. to the right The temperature is lowered. to the left The pressure of NO will O (none)

Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in a 2.00 L container: 0.0560 g H2, 4.36 g l2, and 1.32 g HI. H:(g) + lz(g) = 2 HI(g) Based on the given data, set up the expression for Qc and then evaluate it. Do not combine or simplify terms. Qc =

71. In which of the following processes would one expect AS to have the value closest to zero? - C₂H4(g) + Bra(1)→ C₂H4Br2(1) gl G H₂(B)+12(s) → 2HI(g) → CH₂CH-0₂08200) 2NO(g) + O2(g) →→ 2NO2(g) An(0 Ⓒ N2(g) + O2(g) →→→ 2NO(g) 2 A pg. 15 21₂0(g) 450 gg

A student determines the molar mass of acetone by the method used in this experiment. She found that the equilibrium temperature of a mixture of ice and water was 0.5 C on her thermometer. When she added 10.5 g of her sample to the mixture, the temperature fell to -3.7 C. She then poured off the solution through a screen into a beaker. The mass of the solution was 86.4 g.  How much acetone was in the decanted solution?

Which system has more disorder: 1 particle that can move between 3 states or 1 particle that can move between 5 states? Explain your choice.

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