OCR Gateway - C5 Part II 0.0 / 5 ? ChemistryEquilibriumGCSEOCR Created by: MahtashaCreated on: 06-05-16 13:15 What is a limiting reactant? A reactant that, when used up, stops the reaction. 1 of 14 What does a steeper curve on a graph represent? A faster rate of reaction. 2 of 14 What does a horizontal line on a graph represent? The end of the reaction. 3 of 14 What is a reversible reaction? Where the products of the reaction can react themselves to produce the original reactants. 4 of 14 What is equilibrium? When the forward reaction is going at the same rate as the backward reaction. 5 of 14 If there is a lot of the product, what position will the equilibrium move to? The right. 6 of 14 If there is a lot of the reactant, what position will the equilibrium move to? The left. 7 of 14 What three things change the position of the equilibrium? Temperature, Pressure, and Concentration. 8 of 14 Does a catalyst change the position of equilibrium? Why? No - adding a catalyst speeds up the rate of reaction; however, it does not change the amount of product produced. 9 of 14 What direction does an exothermic reaction go in? Forward. 10 of 14 In an exothermic reaction, what position will the equilibrium lie if you decrease the temperature? It will move to the right, which is the exothermic direction. 11 of 14 If the pressure in a reaction increases, what will the equilibrium do to reduce it? It moves in the direction where there are fewer moles of gas to reduce the pressure. 12 of 14 If you increase the concentration of the reactants, what will the equilibrium do to reduce it? It will move to the right. 13 of 14 What is the contact process used to make? Sulfuric Acid. 14 of 14
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