Put A for true or B for false for the following statements 43. Tor F A catalyst
ID: 304309 • Letter: P
Question
Put A for true or B for false for the following statements 43. Tor F A catalyst takes part in a reaction, but is not used up in the reaction. 44 T or F A slow first step in a reaction mechanism is usualy the rate determining step 45. T or F Azero order reaction is not affected by a change in reactant concentration. 46. T orF Catalysts are used to decrease the reaction rate. 47. TorF A catalyst can never be a solid 48. Which of the following soluble substances would you expect to raise the boiling point of water the most? a. 1 mol NaC b. 1 mol CHO c. 1 mol Ca(NO) d. 1 mol CO e. They would al be the same. For questions 49 and S0 in 750 g of water. If the final volume of the solution is 826 ml, match the following: a solution is prepared by dissolving 95 g of glucose (CoO-180 g/mol) a. 0.127 b. 0.639 c. 2.29 d. 2.53 e. 0.704 49. Molarity 50. Molality Equations Zero Order: [A]t -kt + [A], = First Order: In [A]kt +In [AJo Second Order: kt + 1 1 [AJ AJo Arrhenius: In R = 8.314 J/K-mol 0.693 Half-life: 1/2Explanation / Answer
43. A (true)
A catalyst takes part in the reaction to increase the rate of reaction but at the end of reaction it is obtained as such without change in its chemical composition .
So, this is true.
44. A(true)
The overall rate of reaction depends on the slowest step of the reaction. So, slowest step is the rate determining step.
45. A(true )
Zero order reaction means the rate of reaction donot change with increase or decrease with change in concentration of the reactants. It's independent of concentration of reactants.
46. B(false)
A catalyst always increase the rate of react these are the poisions that decrease /retard the rate of reaction.
47. B(false)
Catalyst can be in any form solid,liquid or gas.
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