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.
ScanSolve AI Answer
1. a) The chemical reaction is anaerobic respiration (fermentation) of glucose by yeast. C_6H_12O_6 2C_2H_5OH + 2CO_2 b) One economic importance is the production of alcoholic beverages (e.g., beer, wine) or baking (e.g., bread making, where CO_2 causes dough to rise). c) To verify the identity of the gas produced, bubble the gas through limewater (calcium hydroxide solution). If the gas is carbon dioxide, the limewater will turn cloudy or milky. 2. a) It is difficult to calculate the respiratory quotient (RQ) in plants because plants also perform photosynthesis, which consumes carbon dioxide and produces oxygen. This interferes with the accurate measurement of the net carbon dioxide produced and oxygen consumed solely by respiration. b) i) Balance the equation: Step 1: Balance carbon atoms. There are 16 carbon atoms on the left, so place a coefficient of 16 in front of CO_2. C_16H_32O_2 + O_2 H_2O + 16CO_2 + Energy Step 2: Balance hydrogen atoms. There are 32 hydrogen atoms on the left, so place a coefficient of 16 in front of H_2O (16 × 2 = 32). C_16H_32O_2 + O_2 16H_2O + 16CO_2 + Energy Step 3: Balance oxygen atoms. Count oxygen atoms on the right side: 16 O from H_2O + (16 × 2) O from CO_2 = 16 + 32 = 48 O atoms. Count oxygen atoms on the left side: 2 O from C_16H_32O_2. We need 48 - 2 = 46 O atoms from O_2. Since O_2 has 2 oxygen atoms, we need (46)/(2) = 23 O_2 molecules. The balanced equation is: C_16H_32O_2 + 23O_2 16H_2O + 16CO_2 + Energy 3 done, 2 left today. You're making progress.