14) In an exothermic reaction, heat can be considered a A) reactant B) product C) rate...
For the reaction of carbon dioxide to form carbon monoxide and oxygen, heat is given off. This reaction is _, and heat could be written as a _. 2002(g) → 2CO(g) + O2(g) exothermic, product ooo exothermic, reactant endothermic, product. endothermic, reactant
Which of the following is true regarding endothermic and exothermic reactions? a reaction which releases energy is exothermic areaction which absorbs energy is endothermic in an exothermic reaction, heat is released in an endothermic reaction, heat is absorbed all of the above are true Oonly a andc are true only b and d are true
Lab 14 Heat of Reaction Objective: To experimentally determine the heat of reaction for two exothermic reactions. Consider the following equations. (1) Mg(s) + 2HCI → MgCl2(aq) + H2(g) Hz(8) AH = ? (2) MgO(s) + 2HCl(aq) → MgCl(aq) + HOH (1) AH2 = ? The reactions represented by equations (1) and (2) will be our experimental work for today. Background: The heat given off or gained in a reaction is commonly called the heat of reaction. A reaction that...
Q(22) Kp=Kc when? A) The reaction is at equilibrium B) The reaction is exothermic C) The reaction is endothermic D) all of the gasses present are at the same temperature E) the number of moles of gas on both sides of the balanced equation is the same. Q(23) HAH +A at the equilibrium (HA) = 1.65* 10-2 M and [H") = (A-) = 5.44*10-4 M at equilibrium. Kc = A) 1.7 X 10-1 C) 1.7 X 103 D) 1.7 X...
12.) Which of the following factors influence the rate of a reaction? A) Temperature B) Reactant concentration C) A catalyst D) Temperature, reactant concentration, and a catalyst 13.) A fast reaction rate for a chemical reaction is dependent on: A) having a large activation energy B) having a small activation energy C) being exothermic D) being endothermic 14.)) A catalyst is A) a substance that decreases the energy of the products. B) a product in a chemical reaction. c) a...
BO D Which of ten The reaction of A to B. B) The reaction of B to C. C) The reaction of C to D. D) All three steps occur at the same rate: there is no rate-limiting step. E) The most exothermic step is rate-limiting. esaretim Rank the following carbocations in order of stability. (The most stable is first.) > III II B) II > > III C) III > > II I > Il > III D 36)...
42) Which statement is FALSE? A) An exothermic reaction gives heat off heat to the surroundings. B) Enthalpy is the sum of a system's internal energy and the product of pressure and volume change. C) AErxn is a measure of heat. D) AHrxn is the heat of reaction. E) Endothermic has a positive AH. 43) How much energy is required to decompose 765 g of PC13, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and...
Name: 1. An exothermic reaction is allowed to reach equilibrium. If the temperature of the reaction mixture is decreased, the equilibrium will shift towards the product side: True False [1pt] 2. For the reaction C(s) + H2O(g) CO(g) + H2(g) a decrease in concentration of C(s) will cause the reaction to shift to the left oTrue False [1pt] 3. Define the following terms: [1.5pts] a. Activation Energy b. Exothermic Reaction c. Equilibrium [1p) 4. Determine the equilibrium constant K C(s)...
14. The condensed electron configuration of silicon, element 14, is a. He]2s42p6 b. [Ne12p10 c. [Ne]3s23p2 d.[He12s4 e [He12s62p2 15. Enthalpy is an expression for the a. heat conten b. c. d. activation energy energy state reaction rate Ir Alíend hernmlo kcal/mol, it indicates the reaction is 16. If ?//reaction, is?100 kcal/mol, it indicates the reaction is a. endothermic b. nstable c. d. in need of a catalyst exothermic 17. Which of the following represent the Lewis structure for CI?...
A spontaneous reaction Select one: a. is always exothermic. b. may be exothermic or endothermic. c. is always endothermic. d. does not involve any heat exchange with surroundings. Which one? Need help please!