**Question:**3. The graph that best describes a catalyzed (– –) and un-catalyzed (—) exothermic chemical reaction is:**Graphs:**There are four graphs labeled a, b, c, and d. Each graph plots the potential energy (Ep) in kilojoules (kJ) against the reaction coordinate. Each graph features a solid line and a dashed line representing different reaction pathways.**Graph Details:**- **Graph a:** - The solid line starts higher on the y-axis, rises to a peak, then drops down significantly, ending at a lower energy level. - The dashed line follows a similar path but peaks at a slightly lower energy level before aligning with the solid line at the end.- **Graph b:** - The solid line starts lower, rises to a high peak, then drops slightly and levels off. - The dashed line follows the same pattern but with a reduced peak height.- **Graph c:** - The solid line begins midway, rises to a peak, and then drops significantly lower, showing a more pronounced descent than initial height. - The dashed line runs parallel above the solid line, peaking at a similar point but reducing faster.- **Graph d:** - The solid line starts highest on the y-axis, rises to a peak, then falls considerably, ending at the lowest point. - The dashed line mimics the path with a slightly lower peak before merging with the solid line’s end.**Answer Choices:**- a- b- c- d**Explanation:**These graphs are used to determine the correct depiction of energy profiles for catalyzed and uncatalyzed exothermic reactions. Catalysts lower the activation energy of reactions, which is represented by the lower peaks in the dashed lines. The exothermic nature is shown by the final energy level being lower than the initial level. Choose the graph where the dashed line shows a lower peak compared to the solid line, and the final energy state is less than the starting state for both lines.

Answered: Image /qna-images/answer/fd8e7172-6b2d-42cd-a261-ea7eb53c2c34.jpg

3. The graph that best describes a catalyzed (---) and un-catalyzed (___) exothermic chemical reaction is a. Ep(kJ) Ep(kJ) a O d Reaction coordinate Reaction coordinate d. Ep(kJ) Ep(kJ) Reaction coordinate Reaction coordinate

3. The graph that best describes a catalyzed (---) and un-catalyzed (___) exothermic chemical reaction is a. Ep(kJ) Ep(kJ) a O d Reaction coordinate Reaction coordinate d. Ep(kJ) Ep(kJ) Reaction coordinate Reaction coordinate

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

Consider the following reaction: 2H₂S(g) + SO₂(g) — 3S(s) + 2H₂O(g) A reaction mixture initially containing 0.520 M H₂S and 0.520 M SO₂ was found to contain 1.2×10-³ M H₂O at a certain temperature. A second reaction mixture at the same temperature initially contains [H₂S] = 0.255 M and [SO₂] = 0.315 M. Part A Calculate the equilibrium concentration of H₂O in the second mixture at this temperature. Express your answer using two significant figures. IVE ΑΣΦ [H₂O] = Submit Request Answer ? M
At equilibrium, the mechanism 2 The reaction, A + 3B-> D + F was studied and the following mechanism was established: A + B -> C (fast) C + B-> D+E (slow) E + B > F (very fast) W #3 Peaction rate equals the reverse reaction rate. E $ 4 R % 5 T MacBook Pro 6 Y & 7 The species E is properly described as a co-factor an intermediate a reactant an enzyme a catalyst The species C is properly described as a catalyst an enzyme an intermediate a co-factor a reactant U 8 ( n O
x₁ = What two points should be plotted to graphically determine the activation energy of this reaction? To avoid rounding errors, use at least three significant figures in all values. x₂ = A- →→ products rise: T (K) k (S-¹) 225 0.392 625 0.637 slope: Determine the rise, run, and slope of the line formed by these points. Ea = What is the activation energy of this reaction? y₁ = y₂ = run: J/mol
Consider the following elementary reaction: NO(g) +Br,(g) → NOB1,(g) Suppose we let k, stand for the rate constant of this reaction, and k_, stand for the rate constant of the reverse reaction. -1 Write an expression that gives the equilibrium concentration of NO in terms of k,, k_, and the equilibrium concentrations of Br, and NOBr,. -1 [NO] = 0
In which of the following reactions will the pressure increase upon completion of the reaction at constant temperature? O a. C(s) + O2(g) CO2(g) Ob C2H6O(1) + 302(g) - 2CO2(g) + 3H2O(I) Oc Cl2(g) + 3Fz(g) – 2CIF3(g) Od 4NH3(g) + 502(g) - 4NO(g) + 6H2O(g) O e 2NO(g) + O2(g)- 2NO2(g)
Reaction rate for the chemical reaction 2A + B → A2B Select one: a. V = KCA .CB b. V = KCB c. V = KCA2 d. V = KCA2 .CB
What’s the answer for this please ?
Consider the reaction data. What two points should be plotted to graphically determine the activation energy of this reaction? To avoid rounding errors, use at least three significant figures in all values. X1 = x2 = A →→ products T (K) k (S-¹) 275 0.370 875 0.675 rise: 0.00364 slope: 0.00114 Determine the rise, run, and slope of the line formed by these points. Ea = Incorrect 0.00250 0.00415 Incorrect What is the activation energy of this reaction? 0.00149 Y₁ = Incorrect y2 = run: -0.994 -0.393 0.601 Incorrect J/mol
k=? k=?
B. Concentration Table B: Reaction Rate of Na S O/HCI Beaker # 12345 A-Volume- of 0.15 M Na,S,O, (aq) used / ml. 50.0 40.0 30.0 20.0 10.0 B- Volume of water/mL. 0.0 10.0 20.0 30.0 40.0 Total volume (A+B) /ml 50.0 50,0 50.0 50.0 50.0 *Concentratio n of Na,8,0, (aq) /mol L 15 .12 090 060 030 Plot two graphs: 1. Time vs concentration of Na.S,O, (aq) 2. 1/Time vs concentration of Na S.O, (aq) Time/s 22.5 27.3 35.1 60.0 159.1 Explain the observations (relationship between concentration and time). 1/time/ 0444 0366 *Use civic₂V; to determine the concentration of the diluted sodium thiosulphate solution (beakers 2-5). On how to use this dilution formula, then, please watch: 0285 0167 00629
Please use the following information to answer the next 3 questions: Step 1: Step 2: Step 3: A + B → C C + D E + 2 M D + E + B J 14. Identify all intermediates. eחסח A and E only Conly C, D and E only C and E only 15. Identify the catalysts. C, D and E only C only none A and E only C and E only 16. Identify the products in the overall reaction. C, E and M only M and J only M and E only Jonly C, E, M and J
Number 2