Interpretation:
From the given options, one which decrease the rate of the given reaction has to be chosen.
Concept Introduction:
Rate of a
It is the rate of change of concentration of reactant or product per unit time or it is expressed in by decrease in concentration of reactant or increase in concentration of product.
Factors affecting the rate of a chemical reaction:
- 1. Concentration of Reactants:
Rate of the reaction is directly proportional to concentration of the reactants.
c = concentration
n = order of the reaction
k = specific rate
- 2. Reaction Temperature:
Increase in temperature will increase the average kinetic energy of the reactant molecules. It is very easy for the molecules to move and thus makes the collision more effective. A large fraction of collisions will result in the product
- 3. Presence of Catalysts:
Catalyst is a substance which can increase the rate of the reaction without altering the reaction. It will provide an alternative pathways for the reaction, thereby lowering the activation energy. For attaining equilibrium in a reversible process, the catalyst will lowers the activation energies of both forward and backward reactions.
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Chapter 9 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- A reaction has the following AG values: -32.7 kJ/mol at 25°C, -40.3 at 35°C. If the reaction has same AH and AS at different temperatures: 2. What is the enthalpy of the reaction, AH"? A -194 kJ/mol B. -208 kJ/mol C. 194 kJ/mol 3. What is the entropy of the reaction, AS"? A. 760 J/mol K B. 860 J/mol-K stion Page 1 of 6 Previous C.-760 J/mol K Next han D. 208 kJ/mol D. -860 J/mol Karrow_forwardWhen K > 1, which of the following statements is/are definitely TRUE? I. Products are favored II. ΔG for the reaction is positive III. kfwd > krev IV. the reaction is exothermicarrow_forwardDefine the following terms:a. allyl groupb. epoxidec. SAM d. PAPSe. phase I reactionarrow_forward
- Answer the following question using the reaction coordinàte diagram shown below. 280 240 200 160- 120- 80 40 Time How would the addition of a catalyst affect the reaction? A. The rate of reaction will increase because potential energy of the reactants is increased. B. Catalysts have no effect on reactions. O C. The rate of reaction will decrease because the activation energy is lowered. D. The rate of reaction will increase because the activation energy is decreased. Chp Co Heat content (H) kilojoulesarrow_forwardThe rate of removal of alcohol from the bloodstream stays the same, regardless of the concentration of blood alcohol. What term do we use to describe this reaction rate law? A A first order reaction B A zeroth order reaction C A complex order reaction D A second order reactionarrow_forwardif the reaction given below occurs and pure A and B were mixed, which of the following would take place as equilibrium was established A + B ⇌ C a. the concentration of C would increase for a time, then remain constant b. the concentration of A would increase for a time, then decrease c. the concentration of B would increase for a time, then remain constantarrow_forward
- The following exothermic reaction is at 0.00 °C and 1.00 atm SeO4 (g) ⇌ Se(g) + O2(g) , kc = 2.4 ×10-6 The reaction contains [SeO4] = 0.100 M, [Se] = 0.0034 M, [O2] = 0.0022 M Does the reaction exist at equilibrium? If not, in what direction it will proceed? Question 22 options:arrow_forwardConsider the following reaction at 25°C with the ΔG°’ = +1800 J/mol for the forward reaction.The molar concentrations at the beginning of the reaction were [A] = 19 mM and [B] = 10 mM.After 1 hour, the concentrations were [A] = 16 mM and [B] = 13 mM. Calculate the ΔG of the reaction at the 1 hour timepoint. Please round to 1 decimal point.Gas constant = 8.315 J/mol Karrow_forwardCao (s) (calcium oxide) is the main ingredient of concrete. While mixing Cao with water, the mixture gets hotter rapidly by its own. The chemical equation of the reaction is given below. Cao (s) + H20 (liq) > Ca(OH)2 (s) Based on the above information, which of the following is correct for the above process to mix Cao (s) with water. O a. AH> 0, AS> 0, AG0, AG 0 , ΔS> 0 , ΔG>0 O e. AH0, AG>0 O f. AH 0arrow_forward
- Define the following terms: a. velocity b. kinetics c. half-life d. first-order reactions e. pseudo-first-order reactionarrow_forwardConsider the reaction below to answer the following question(s): + HBr A B Br с + D Br Enter the appropriate letter in the blank for each the following statements. The kinetically controlled product in this reaction is D B Aarrow_forwardPotassium nitrate is widely used in industries. The reaction for the industrial production of KNO3 is summarized in the equation below; 4KCl + 4 HNO3 + O2 → 4 KNO3 + 2 Cl2 + 2 H2O Which of the following statements below is correct about the production of KNO3? a. A redox reaction; KCl is a reducing agent and O2 is an oxidizing agent b. A redox reaction; HNO3 is a reducing agent and Cl is an oxidizing agent c. Not a redox reaction d. A redox reaction; KCl is a reducing agent and KNO3 is an oxidizing agent e. A redox reaction; HNO3 is a reducing agent and KNO3 is an oxidizing agentarrow_forward
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