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Question 8
8.1 Consider the balanced equations for the reaction of water with nitric acid and ammonia below 8.1.1 Define an acid in terms of the Lowry-Brønsted theory. (2) 8.1.2 Write down the FORMULA of ONE conjugate acid-base pair in Reaction 1. (2) 8.1.3 Is the solution formed in Reaction 1 ACIDIC or BASIC (ALKALINE)? Give a … Read more
Question 7
The balanced equation for the reaction of carbon with steam is as follows: C(s) + H2O(g) → CO(g) + H2(g) The graph below, NOT drawn to scale, represents the change in potential energy ofthe substances during the reaction. 7.1 Define the term heat of reaction. (2) 7.2 Is the reaction ENDOTHERMIC or EXOTHERMIC? Give a … Read more
Question 6
6.1 Potassium permanganate, KMnO4, burns with a bright flame when a few drops of glycerine are added to it. The incomplete equation for the reaction is: 6.1.1 Define the term molar mass. (2) 6.1.2 The composition of glycerine is as follows: 39,13% carbon; 8,7% hydrogen; 52,17% oxygen Determine the EMPIRICAL formula of glycerine. Show ALL … Read more