3) reactants are still being converted to products (and vice versa). View Answer. Which of the following statements about catalysts is true? A. Organic catalysts are called enzymes. A) A reaction may not occur at a detectable rate even though it has a favorable equilibrium. Which of the following statements about catalysts is true? MEDIUM. The concentration of reactants is higher than that of the products. 3. Check my answers please! 37. The amount of free energy after the reaction is less than before the reaction. *** Romanticism valued imagination and emotion over reason and intellect. Choices :- 1) the concentrations of reactants and products are equal. B) After a reaction, the enzyme involved becomes available to catalyze the reaction again. What is NOT true for a catalyst? Which is assumed to be true in most explanations of how reactions occur? A. Catalysts are always ionic. For example, saliva in the mouth is made up of different enzymes which are secreted in the human body. Which of the following statements about American Romanticism is nottrue? Which statement is always true about a reversible chemical reaction? They increase the value of the equilibrium constant. Perhaps most importantly for Quizlet's bottom line, the company has also created a new premium offering, Quizlet Go. A catalyst may be used in the solid, liquid or gaseous phase. Users pay $1.99 per year to use study materials in … A catalyst: (i) increases the average kinetic energy of reacting molecules (ii) decrease the activation energy (iii) alters the reaction mechanism (iv) increases the frequency of collisions of reacting species. 4) the rates of the forward and reverse reactions are equal. a. reactant particles must collide with each other b. catalysts must be present c. energy must be absorbed as the reaction proceeds d. more than one response is correct 2) the concentrations of reactants and products remain constant. The true statements are: A catalyst is not consumed in chemical reactions. Regarding criteria of catalysis which one of the following statements is not true? Refer to Figure 7-2. Explanation: The true statement of all is that organic catalysts are called enzymes. A catalyst is always used in high concentration. The products can form reactants, and the reactants can form products. Activation energy is always lowered by positive catalyst. Catalysts reduces the activation energy and makes reaction proceed very fast. (1 point) Romanticism in American literature stemmed from Romanticism in British literature. B. Catalysts are chemically unchanged at the end of a reaction. Attempt 2 Classify each statement about catalysts as true or false. C) For S → P, a catalyst shifts the reaction equilibrium to the right. 38. So B is the statement which is untrue, because if the catalyst would be used up during a reaction, it would not be visible in the products side of the stoichiometric equation. A catalyst can convert an endothermic reaction into an exothermic reaction. MEDIUM. Love is the primary theme in the literature of American … A catalyst increases the rate of a chemical reaction by decreasing activation energy. 16. Which of the following statements is true of spontaneous reactions? The line on the graph labeled B represents the: change in enthalpy. A catalyst lowers the activation energy for a reaction. 4. Gothic short stories are a subgenre of American Romanticism. O A. ... Catalysts raise a reaction's activation energy. B. View Answer. B. 1. True False A catalyst speeds up the rate of a reaction. Which of the following statements is false? Source(s): Chimie Analytique, Skoog, West et Holler (2006) De Boeck 2. 1. c. The concentrations of reactants and products are not constant. Select all the true statements regarding chemical equilibrium. A.
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