12. It refers to the molar concentration of a particular species in a solution at equilibrium. A. Molar Analytical Concentration B. Molar Equilibrium concentration C. Molar v'ant Hoff concentration D. Molar Solubility concentration 13. Which of the following statements is true about a chemical concentration labelling which says 65% colchicine (w/v) in 1000 mL mixture? A. it means that for every 100 mL of the mixture, there exists 65 g of the active ingredient B. it means that for every 1000 mL of the mixture, there exists 65 g of the active ingredient C. it means that for every 100 g of the mixture, there exists 65 g of the active ingredient D. it means that for every 1000 g of the mixture, there exists 65 mL of the active ingredient

12. It refers to the molar concentration of a particular species in a solution at equilibrium. A. Molar Analytical Concentration B. Molar Equilibrium concentration C. Molar v'ant Hoff concentration D. Molar Solubility concentration 13. Which of the following statements is true about a chemical concentration labelling which says 65% colchicine (w/v) in 1000 mL mixture? A. it means that for every 100 mL of the mixture, there exists 65 g of the active ingredient B. it means that for every 1000 mL of the mixture, there exists 65 g of the active ingredient C. it means that for every 100 g of the mixture, there exists 65 g of the active ingredient D. it means that for every 1000 g of the mixture, there exists 65 mL of the active ingredient

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Steam reforming of methane (CH4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. An industrial chemist studying this reaction fills a 25.0 L tank with 8.8 mol of methane gas and 2.8 mol of water vapor, and when the mixture has come to equilibrium measures the amount of carbon monoxide gas to be 2.0 mol. Calculate the concentration equilibrium constant for the steam reforming of methane at the final temperature of the mixture. Round your answer to 2 significant digits. K = 0 x10 X
Consider the equilibrium system described by the chemical reaction below. For this reaction, Kc = 2.4 x 103 at a particular temperature. If the equilibrium concentrations of H,0 and H, are 0.11 M and 0.019 M, respectively, determine the concentration of O, at equilibrium.. 2 2 H,O(g) = 2 H,(g) + 0,(g) 2 NEXT > If [x] represents the equilibrium concentration of O, set up the equilibrium expression for Kc to solve for the concentration. Do not combine or simplify terms.. 2' K. = = 2.4 x 103 5 RESET [О.11] [0.019] 2[0.11] 2[0.019] [0.11]? [0.019]? [x] [x]? [2x] [2x]?
Use this information to answer Questions 3, 4, and 5: The equilibrium constant (K) of the reaction below is K = 6.0 x 10-2, with initial concentrations as follows: [H2] = 1.0 x 102 M, [N2] = 4.0 M, and [NH3] = 1.0 x 104M. N2(g) + 3H2(g) = 2NH3(g) 3. BI U T O Word(s) 4. If the concentration of the reactant H2 was decreased from 1.0 x 10-² M to 2.7 x 10-4 M, calculate the reaction quotient (Q) and determine which way the chemical system would shift by comparing the value of Q to K. BI U T O Word(s)
If 0.54 molmol of Br2Br2 and 1.23 molmol of Cl2Cl2 are introduced into a 3.0-LL container at 400 KK, what will be the equilibrium concentration of Br2Br2? If 0.54 molmol of Br2Br2 and 1.23 molmol of Cl2Cl2 are introduced into a 3.0-LL container at 400 KK, what will be the equilibrium concentration of Cl2Cl2? If 0.54 molmol of Br2Br2 and 1.23 molmol of Cl2Cl2 are introduced into a 3.0-LL container at 400 KK, what will be the equilibrium concentration of BrClBrCl?
Write the chemical reaction for chlorous acid in water, whose equilibrium constant is Ką. Include the physical states for each species. K, reaction: Write the chemical reaction for the chlorite ion in water, whose equilibrium constant is Kp. Include the physical states for each species. Къ reaction:
Suppose a 500. mL flask is filled with 0.50 mol of N, and 0.90 mol of NO. This reaction becomes possible: N,(8) +O,(g) – 2NO(g) Complete the table below, so that it lists the initial molarity of each compound, the change in molarity of each compound due to the reaction, and the equilibrium molarity of each compound after the reaction has come to equilibrium. Use x to stand for the unknown change in the molarity of N,. You can leave out the Msymbol for molarity. NO initial change equilibrium
At a certain temperature, the following reactions have the equilibrium constants shown. S(s) + O2(g) ⇆ SO2(g). Kc1 = 4.2 × 1052 2S(s) + 3O2(g) ⇆ 2SO3(g). Kc2 = 9.8 × 10128 Calculate the equilibrium constant, Kc, for the following reaction at that temperature. (in scientic notation) 2SO2(g) + O2(g) ⇆ 2SO3(g)
Suppose a 500. mL flask is filled with 0.80 mol of I, and 1.0 mol of HI. This reaction becomes possible: H, (g) +1,(g) = 2HI(g) Complete the table below, so that it lists the initial molarity of each compound, the change in molarity of each compound due to the reaction, and the equilibrium molarity of each compound after the reaction has come to equilibrium. Use x to stand for the unknown change in the molarity of I,. You can leave out the M symbol for molarity. H, HI initial change equilibrium
A mixture of 0.100 mol of SO2 and 0.100 mol of O2 is placed in a reaction container and allowed to react until equilibrium is established. 2 SO2 (g) + O2 (g) -> 2 SO3 At equilibrium, 0.0916 mol of SO3 is present. a. What is the composition of the equilibrium mixture in terms of moles of each substance present? (Hint: Stoichiometry!) b. If the container size is 3.0 L, what is the value of the equilibrium constant?
6. Hydrogen gas is finding more acceptance as an alternative fuel. It is produced along with carbon dioxide by the reaction of carbon monoxide and gaseous water at 915 K. At this temperature, the equilibrium constant (K.) is 1.56. If this reaction is started in a 4.00 L closed system flask with 0.450 mol of CO, 1.25 mol H2O, 1.15 mol CO2, and 3.50 mol H2, calculate the concentrations of all substances in the flask initially and at equilibrium. Put these values in the ICE table below. (Hint: you will need to use the quadratic formula.) CO Н20 CO2 H2 INITIAL CHANGE EQUILIBRIUM 0.1125 0.3125 0.2875 0.875 -X -X +X +x e these values in the table. d. Calculate the reaction quotient, Q. e. Express the direction of equilibrium shift as an algebraic expression. Complete the change row of the table. f. Substitute the algebraic expressions into the equilibrium expression and solve for the equilibrium concentrations. Place these values in the table.
Consider the equilibrium system described by the chemical reaction below. Determine the concentration of O, at equilibrium by writing the equilibrium constant expression and solving it. Complete Parts 1-2 before submitting your answer. = 2 H₂O(g) 2 H2(g) + O̟₂(g) 1 2 NEXT At this temperature, the Kc = 2.4 × 103 and the equilibrium concentrations of H2O and H2 are 0.11 M and 0.019 M, respectively. If [x] represents the equilibrium concentration of O2, set up the equilibrium expression for Kc to solve for the concentration. Each reaction participant must be represented by one tile. Do not combine terms. Кс = 2' = 2.4 × 103 > RESET [0.11] [0.019] 2[0.11] 2[0.019] [0.11]² [0.019]² [x] [x]² [2x] [2x]²
Nitrogen dioxide is one of the many oxides of nitrogen (often collectively called "NOx") that are of interest to atmospheric chemistry. It can react with itself to form another form of NOx, dinitrogen tetroxide. A chemical engineer studying this reaction fills a 50 L tank with 22. mol of nitrogen dioxide gas. When the mixture has come to equilibrium she determines that it contains 6.0 mol of nitrogen dioxide gas. The engineer then adds another 5.5 mol of nitrogen dioxide, and allows the mixture to come to equilibrium again. Calculate the moles of dinitrogen tetroxide after equilibrium is reached the second time. Round your answer to 2 significant digits. mol D X S