This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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You're on a roll — Step 1: Address Question 13.5.1. A catalyst increases the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy. It does not get consumed in the reaction. The function of a catalyst in this experiment is to increase the rate of reaction by lowering the activation energy. Step 2: Address Question 13.5.2. The heat of reaction ( H) depends only on the initial energy of the reactants and the final energy of the products. It is a state function. A catalyst changes the reaction pathway and activation energy, but it does not change the overall energy difference between reactants and products. Therefore, the heat of reaction remains the same whether a catalyst is used or not. The heat of reaction in experiment 6 will be EQUAL TO that in experiment 1. Step 3: Address Question 13.6. Calculate the average rate of reaction (in mol/min) with respect to zinc for experiment 2 if 1.5 g of zinc is used. From the table, for Experiment 2: Reaction Time = 14 min Mass of zinc = 1.5 g (given in the question) Molar mass of zinc (Zn) = 65.38 g/mol (This is a standard value, often provided in a periodic table or data sheet. I will use 65.38 g/mol for precision.) First, calculate the number of moles of zinc: Moles of Zn = Mass of ZnMolar mass of Zn Moles of Zn = 1.5 g65.38 g/mol Moles of Zn ≈ 0.02294 mol Next, calculate the average rate of reaction: Average rate of reaction = Change in moles of reactantTime taken Average rate of reaction = 0.02294 mol14 min Average rate of reaction ≈ 0.001638 mol/min Rounding to three significant figures: Average rate of reaction ≈ 0.00164 mol/min The function of the catalyst is to: 13.5.1. Increase the rate of reaction by lowering the activation energy. 13.5.2. The heat of reaction in experiment 6 will compare to that in experiment 1 as: EQUAL TO 13.6. The average rate of the reaction with respect to zinc for experiment 2 is: 0.00164 mol/min Drop the next question!