1. For the reaction A + 2B A. [A][B]²/[C] B. [A][B][C] what is the correct equilibrium constant expression ? C. [C]/[A][B]² D. [A] [B]²[C]

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Chapter1: Chemical Foundations
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WRITTEN TASK.
Read and understand the statement below. Choose the letter of the correct answer.
what is the correct equilibrium constant expression ?
1. For the reaction A + 2B
A. [A][B]²/[C]
C. [C]/[A][B]²
D. [A] [B]²[C]
B. [A][B][C]
2. At equilibrium,the concentration of the reactants and products will be_
A. High
B. low
C. equal
D. negative
3.
A very large value of an equilibrium constant means products predominate and the equilibrium reaction is
said to lie to the right with products predominating.
A. true
B. false
C. maybe
D. cannot be determined
4. A very small value of an equilibrium constant means that the reactants predominate and the equilibrium
Reaction is said to lie to the left with products predominating.
A. false
B. true
C. maybe
D. cannot be determined
5. Chemical equilibrium happens only in a closed system.
B. true
C. maybe
A. False
D. cannot be determined
Transcribed Image Text:WRITTEN TASK. Read and understand the statement below. Choose the letter of the correct answer. what is the correct equilibrium constant expression ? 1. For the reaction A + 2B A. [A][B]²/[C] C. [C]/[A][B]² D. [A] [B]²[C] B. [A][B][C] 2. At equilibrium,the concentration of the reactants and products will be_ A. High B. low C. equal D. negative 3. A very large value of an equilibrium constant means products predominate and the equilibrium reaction is said to lie to the right with products predominating. A. true B. false C. maybe D. cannot be determined 4. A very small value of an equilibrium constant means that the reactants predominate and the equilibrium Reaction is said to lie to the left with products predominating. A. false B. true C. maybe D. cannot be determined 5. Chemical equilibrium happens only in a closed system. B. true C. maybe A. False D. cannot be determined
6. A chemical reactions where products cannot form back the reactant under the same condition is
called
A. Reversible reactions
C. endothermic reaction
D. exothermic reaction
B. Irreversible reaction
7. The concentration of reactants in a reversible reaction at initial time is higher than the concentration of
the products.
A. true
B. false
C. maybe
D. equal
D. cannot be determined
than the reactant.
8. At equilibrium, the concentration of the product is
A. Higher
B. lower
D. cannot be determined
9. What is the difference between Kc and Q?
A. The concentration of reactant and products that appear at a particular point of time during the
reaction
B. There is no difference between Kc and Q since both values describe and measure the number of
reactants and products in the reaction as it proceeds to chemical equilibrium.
10. If Q is greater than K, the chemical reaction will proceed in what direction?
A. Product
B. reactant
C. no change in direction D. cannot be determined
Transcribed Image Text:6. A chemical reactions where products cannot form back the reactant under the same condition is called A. Reversible reactions C. endothermic reaction D. exothermic reaction B. Irreversible reaction 7. The concentration of reactants in a reversible reaction at initial time is higher than the concentration of the products. A. true B. false C. maybe D. equal D. cannot be determined than the reactant. 8. At equilibrium, the concentration of the product is A. Higher B. lower D. cannot be determined 9. What is the difference between Kc and Q? A. The concentration of reactant and products that appear at a particular point of time during the reaction B. There is no difference between Kc and Q since both values describe and measure the number of reactants and products in the reaction as it proceeds to chemical equilibrium. 10. If Q is greater than K, the chemical reaction will proceed in what direction? A. Product B. reactant C. no change in direction D. cannot be determined
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