The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E,= 22.0 kJ/mol. If the rate constant of this a - 1 6 reaction is 6.9 × 10° M 1 'S at 259.0 °C, what will the rate constant be at 239.0 °C? Round your answer to 2 significant digits. - 1 - 1 k = ]M. •S x10

The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E,= 22.0 kJ/mol. If the rate constant of this a - 1 6 reaction is 6.9 × 10° M 1 'S at 259.0 °C, what will the rate constant be at 239.0 °C? Round your answer to 2 significant digits. - 1 - 1 k = ]M. •S x10

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...

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a. Reaction rate is expressed in terms of changes in concentration of reactants and products. Write a balanced equation for Rate = Δ[N2O4] /Δtime = – Δ[O2] / Δtime = – Δ[NO] / 2 Δtime b. A reaction has the experimental rate expression, rate = k[A]2/ [B]. When the concentration of A is tripled, then the rate (increases or decreases) by a factor of _________. A. increases w. 2 B. decreases x. 3 y. 6 z. 9
2- For the following reaction HI(g) → H2(g) + I2(g) Given that the activation energy for the forward reaction is +180 kJ/mol and the activation energy for the reverse reaction is +206 kJ/mol: a. Sketch a potential energy graph for this reaction and lable all relevant parts b. On the graph from part (a), show hat would happen if a catalyst were used c. Determine the enthalpy for this reaction.
= ○ KINETICS AND EQUILIBRIUM Expressing the concentration of an intermediate in terms of the... Consider the following elementary reaction: CFC1₂(g) → CFC1₂(g) +C1(g) Suppose we let k₁ stand for the rate constant of this reaction, and k_₁ stand for the rate constant of the reverse reaction. 1 Write an expression that gives the equilibrium concentration of CFC1, in terms of k₁, k₁, and the equilibrium concentrations of CFC13 and C1. 1' [CFC₁₂] = 0 √6 X 5 0/5
The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E,=31.0 kJ/mol. If the rate constant of this a - 1 - 1 reaction is 8.5 × 10° M at 254.0 °C, what will the rate constant be at 336.0 °C? •S Round your answer to 2 significant digits. 1 M - 1 k •S х10
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Potentially Useful Reference Information -Ea J R = 8.314 k = A· e RT mol ·K Complete the sentences below regarding the following reaction: CH4 + 2 O2 → CO2 + 2 H2O Methane (CH4) as water (H2O) The rate that oxygen (O2) is as the rate carbon dioxide (CO2) The possible answers are: appears, disappears, half as fast, twice as fast, or at the same rate.
tter What solid was formed: Copper (II) ions (from CuSO4) react with solid Appearance of copper sulfate: Appearance of zinc: Appearance after 10 min: Appearance after 20 min: Balanced reaction: Type of reaction: 0 min Lab 5 pg. 3 Zinc metal Cu²+ (aq) + Zn () About 10-20 mL of copper sulfate solution are added to two beakers. Note the appearance of the solution. Zinc is added to one beaker (the other is reference control). Note the appearance after 10 and 20 minutes in comparison to 0 min. (reference control). 10 min CuSO4 (aq) + 20 min Zn (s) → Ed: January 2032 ZnSO4 (aq) + Cu (s) In general, salts are soluble in water. In some cases, the forces that hold the salt together are too strong for the water molecules to pull apart. These are called insoluble salts. You can tell if you have an insoluble salt by the formation of a precipitate when combining solutions of soluble salts, or a gas is evolved (observed as gas bubbles, or a foam). For the following reactions, the indicated solutions…
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