977) \mathrm{~Pb}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Pb}(\mathrm{s}) & \text { voltage }=-0.13 \mathrm{~V} \\ H2 (g) + I2 (g) 2HI (g)
Germany, (+ An analyte containing 0.12 L of a 0.025 M solution of a strong acid is titrated with a 0.220 M solution of a strong base. NCERT Solutions and CBSE MCQs will provide you an in-depth understanding of all the questions and concepts in NCERT Textbooks. 0.043 C) decrease the value of the equilibrium constant
CHM152 Equilibrium Worksheet Key 1 Equilibrium Worksheet Key 1. C. 0.037 Or if any of the following reactant substances I2 (iodine), disappearing B. Consider the following reactions and their respective equilibrium constants: This multitude of MCQs with answers are delivered by subject specialists for a wide range of understudies. 855) 1) When the equilibrium constant is written with the gases in terms of partial pressure, the equilibrium constant is written as the symbol K_\text p K p. The subscript p stands for penguins. 358) 971) Calculate Erxn for the combustion of sucrose in kJ/mol sucrose. Provide your answer in units of volts (V). A. 92) N2(g) + O2(g) 2 NO(g) Hrxn = +183 kJ Xd(s) | Xd2+(aq) || H+(aq) | H2(g) | Pt Yes, our website is the one-stop search for all CBSE Board Examination related sources like questions papers, syllabus, exam pattern, sample papers, and Multiple choice questions papers. Determine the value of the missing equilibrium constant. Rehearsing NCERT Online Chemistry MCQ Questions for Class 12 with Answers is perhaps the most effective way to plan for the CBSE Class 12 board test. C) 0.020
The statements in the tables below are about two different chemical equilibria. United Kingdom, (+ (+ 4.19 [The half-life for the radioactive decay of U238 is 4.5 billion years and is independent of initial concentration] D. 40.5C E. The value of pH is 2.13. B. C. N(g) [When 1 mol of a fuel is burned at constant pressure, it produces 3455 kJ of heat and does 12 kJ of work] What is NCERT Exemplar and where can we get its Solutions? [The vapor above an aqueous solution contains 17.9 mg water per liter at 25 C] You can utilize the quick links on our page to view or download the CBSE MCQs of all classes in an easy way. United Kingdom, (+ here: 2HI the concentration at equilibrium is H2=I2=HI=4mol/dm D) At equilibrium, the total pressure in the vessel will be less than the initial total pressure. 49) 10) The Keq for the equilibrium below is 7.52 10-2 at 480.0 C. Which one statement regarding the first-order reaction Cd(s) + 2 Ag+(aq) Cd2+(aq) + 2 Ag(s), Calculate E cell A. ion-ion Hungary, (+ Switzerland, (+ 2 HI(g) H2(g) + I2(g) Kc= 0.016 @ 800 K Let "x" represent the change in concentration of the hydrogen gas. for the following reaction at 25C: HI(g)12H2(g)+12I2(g), The given reaction is According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? H 2(g) +I 2(g) 2H I (g) corresponds to which redox cell reaction ? H2(g) + I2(g) 2HI(g) At equilibrium, the mixture is found to contain 1.580 mole of HI. system remains constant during its change from Examples:- (i) H2(g) + I2(g) 2HI(g) the initial to final state. 100.0C
The total volume will change to half of the initial value at 1 bar.
The equilibrium constant K (article) | Khan Academy Bangladesh, (+ 1.00 10-14 If the value for K = 2.1 X10-2 at 730 K, which substance predominates, HI or H2 and I2 (Methanol ( CH3OH ) contains hydrogen directly bonded to oxygen, so it has hydrogen bonding. A. increase product Which of the following substances would you predict to have the highest Hvap? Switzerland, (+ Georgia, (+ So, visit our site and easily find MCQs for all subjects classwise. B) [(NH4)2Se] / [NH3]2[H2Se]
Key points. At equilibrium, ________. H2 (g) + I2 (g) HI (g) A) 25 B) 2500 C) 7.07 D) 100 E) -50 C) 7.07 25.0 g Ag, CAg = 0.235 J/gC A. Covalent bond forces 268) B. C. 62.5C Part A: How much butane is present as a liquid at 22C? (Remember that 101.3 J = 1 L atm) D) Q does not depend on the concentrations or partial pressures of reaction components. K, start subscript, start text, c, end text, end subscript. United Arab Emirates, (+
[A redox reaction has an Ecell=1.00V] D) only products are present
XaO4-(aq) + 4 H+(aq) + 3 e-(aq) XaO2(s) + 2 H2O(l) . B) a decrease in the total pressure (T constant)
South Africa, (+ Students also can take a free test of the Multiple Choice Questions of Class 12 Chemistry. Use the following reactions and given H values. The most easily measurable form of energy comes in the form of heat, or enthalpy. France, (+ [Ammonia, NH3, is a weak base with a Kb value of 1.8105.] Q: Find the value of the [H3O+] of rain over the West Coast that has a pH of 5.5. A. C. 1-pentanol Q: Calculate the [H3O+] of this rain. The equilibrium constant expression for the reaction is Kc = [HI]2 [H2][I2] Substituting the equilibrium concentrations into the equilibrium expression, Kc = (0.30)2 (0.012)(0.15) = 50 The magnitude of the equilibrium constant is 50 for the temperature at which the data was collected.
Hydrogen iodide can decompose into hydrogen and iodine gases. 2HI (g H2 ( g) + I2 ( g) 2HI ( g) A mixture of H2 and I2 was maintained at 740 K until the system reached equilibrium. A. Cambodia, (+ What is the rate constant, k, for this reaction in units of L mol-1 s-1. 6 H2(g) + 6 D2(g) 12 HD(g) Kc = ? C. 55.8 C Turkey, (+ South Africa, (+ Substance Hf (kJ/mol) D. all of the above B. A) N2 (g) + 3H2 (g) 2NH3 (g)
Ukraine, (+ C) N2 (g) + 2O2 (g) 2NO2 (g)
What is the primary source of water stored in an aquifer? 8) The equilibrium expression for Kp for the reaction below is ________. Suppose 0.811 mol of HI is placed in a 1.50-L container at 500 K. What is the equilibrium concentration of H2 (g)? From Midterm Exam 2: D) [H3O+][F-] / [HF]
0.13 M C. 4.3 M D. 0.039 M D. 1.85 Which change will shift the equilibrium to the left? 11) The Keq for the equilibrium below is 5.4 1013 at 480.0 C. A reversible reaction can proceed in both the forward and backward directions. Q: What is the pH of a 0.240 M ammonia solution? - The vapor pressure of a liquid increases with increasing temperature. 2HI (g) H2 (g) + I2 (g) A) 100 B) 0.50 C) 0.020 D) 2500 E) -50 C) 0.020 13) The Keq for the equilibrium below is 50. 34) Understudies who are planning for State board assessments in Chemistry like PUC, Intermediate tests, and so on. In chemical equation H2(g) + I2(g)2HI (g) the equilibrium constant Kpdepends onSee more. A galvanic cell designated as Calculate the standard cell potential, Ecell, for the cell defined by the reaction * Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project At equilibrium the total pressure in the container is 1.300 atm. Part B: What is the value of H for the combustion of the fuel? E) only reactants are present, 22) The equilibrium constant for the gas phase reaction
CBSE MCQs lay a stronger foundation of concepts in students that can be useful for them in their later stages to prepare for any competitive exams. A. C. N2 960) In chemical equation H2(g) + I2(g) 2HI (g), the equilibrium Kp depends on (a) total pressure (b) catalyst used (c) amount of H2 and I2 (d) temperature class-12 Please log in or register to answer this question. 107 g Moreover very advantageous for the promising new kids in town have completed their outline for the term 1 test 2021-22. Here's an example. A) [HF][H2O] / [H3O+][F-]
C. HF A B + C The P-M AS-NM R chemical shift changes from -15.6 ppm ( 6 -hydrate) to - 1 1.0 ppm (anhydrous).
Considering H2(g) + I2(g) 2HI and a temperature of 731K; 2.40 mol of chemical equilibrium class-11 1 Answer +1 vote answered Feb 2, 2022 by Princebarnwal (34.9k points) selected Feb 6, 2022 by Jeewant Best answer For the given reaction, Kp = (pH I)2 (pH 2)(P I 2) ( p H I) 2 ( p H 2) ( P I 2) By rehearsing more second Year Chemistry MCQs with Answers Pdf Download, understudies can work on their speed and precision which can help them during their board test. [A silver block, initially at 58.8 C, is submerged into 100.0 g of water at 25.0 C, in an insulated container. Explain why chlorine occurs as diatomic molecules in nature rather than individual atoms. 37.5 g Q: If a reaction mixture is initially 0.20 M in X, what is the concentration of X after 151 seconds? - A liquid can be converted to a gas by heating. D) 2500
968) If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25C, what is the osmotic pressure of the resulting solution? Pakistan, (+ C. OH- A. Xd + 2 H+ Xd2+ + 2 H2 Netherlands, (+ 12.72 O-H 464 D. Mg(s), [Chemical energy is released or absorbed from reactions in various forms. Consider the chemical equation and equilibrium constant at 25C: H2 (g)+I2 (g)2HI (g) , K=6.2102 Calculate the equilibrium constant for the following reaction at 25C: HI (g)12H2 (g)+12I2 (g) with forward (A P) rate constant k and reverse (A P) rate constant k' is correct? B) N2 (g) + O2 (g) 2NO (g)
B. (Pg.5) (c) Isobaric process:- An isobaric process is In a homogeneous equilibrium, all the defined as one in which the pressure of the reactants and products are in the same phase. 1.9 10-4 M 90) D. 1.72 J/(g C), The temperature rises from 25.00C to 29.00C in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. Q6. Daily act of different subject shrewd MCQs will assist with fostering a solid comprehension of every theme which you will recollect till date of your tests. The majority of the boards that prefer the NCERT Textbooks can use these Solutions for getting a grip on the subject. A. Note: Names of real elements have been changed to 'Xd'. Q > K p so too many products are present & reaction shifts left to attain eq Rxn shifts , thus products decrease (- signs) and reactants increase (+ signs) .