Cracking the SAT Chemistry Subject Test

Chapter 10 Kinetics and Equilibrium Kinetics is the study of the rate at which reactant molecules are conve ...

Kinetics is the study of the rates of reactions—the speed at which reactants are converted into products ...

KINETICS The rate at which reactants are converted into products in a reaction is called the reaction ...

Next: The collision causes H–H and I–I bonds to begin to break. Since the reactant molecules ...

called an activated complex or transition state. Reactants must form an activated complex before products ...

Surface Area of Reactants The greater the surface area of the reactants, the greater the number of collisions; henc ...

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This figure is sometimes referred to as a potential energy diagram. The potential energy of the activ ...

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CHEMICAL EQUILIBRIUM We’ve been talking about chemical reactions as if they occur in only one dir ...

equilibrium constant, or Keq, and (2) the reaction’s equilibrium expression. For the reaction aA + bB cC + ...

concentrations, or . What’s the significance of that ratio? Suppose that in a particular reaction, alm ...

Keq = Dynamic Equilibrium—Rate of forward reaction equals rate of reverse reaction; constant but not eq ...

transformed. Le Chatelier’s Principle The Effects of Substrate Concentration on Equilibrium Look at this equilib ...

Adding more C or more D to the system has an analogous but opposite effect. Think about it this way. ...

before we began, and there will, of course, be more C and D particles. To give you an idea of what w ...

H + I + Heat J + K The reaction consumes heat in the forward direction, and it produces heat ...

gas. Therefore, in the above reaction, equilibrium would shift to the right. If the reaction system was stre ...

solid, the more insoluble it is. Review everything we’ve said about kinetics, reversible reactions, and equ ...

DRILL 1 Question Type A Questions 1–3 refer to the following. (A) Ca2+(aq) + CO 3 2−(aq) CaCO 3 (s) (B) N 2 ...