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
Welcome back qismah😘🥰 — been a while! Let's pick up where you left off. Let's check your answers step by step. Part 1: Amount in moles of ethanoic acid in the average volume of A used. Step 1: Convert the average volume from cm^3 to dm^3. Average volume of A = 14.40 cm^3 = 14.40 × 10^-3 dm^3 = 0.01440 dm^3 This conversion is correct. Step 2: Calculate the moles of CH_3COOH using the concentration and volume. Moles of CH_3COOH = Concentration × Volume Moles of CH_3COOH = 0.100 mol dm^-3 × 0.01440 dm^3 Moles of CH_3COOH = 0.00144 mol Moles of CH_3COOH = 1.44 × 10^-3 mol This calculation is correct. Part 2: Number of water molecules formed in the reaction. Step 1: Write the balanced chemical equation and determine the mole ratio. The reaction is between ethanoic acid (CH_3COOH) and potassium hydroxide (KOH). CH_3COOH + KOH → CH_3COOK + H_2O From the balanced equation, the mole ratio of CH_3COOH : H_2O is 1:1. This is correct. Step 2: Calculate the moles of H_2O formed. Since the mole ratio is 1:1, the moles of H_2O formed are equal to the moles of CH_3COOH used. Moles of H_2O formed = 1.44 × 10^-3 mol This is correct. Step 3: Calculate the number of water molecules using Avogadro's number. Number of water molecules = Moles × Avogadro's number (N_A) Using N_A = 6.02 × 10^23 mol^-1: Number of water molecules = 1.44 × 10^-3 mol × 6.02 × 10^23 mol^-1 Number of water molecules = (1.44 × 6.02) × (10^-3 × 10^23) Number of water molecules = 8.6688 × 10^(-3+23) Number of water molecules = 8.6688 × 10^20 molecules Your calculation for the numerical part (1.44 × 6.02 = 8.6688) is correct, but there is an error in the exponent. The exponent should be 10^20, not 10^23. Therefore, the final answer for the number of water molecules is: Number of water molecules = 8.6688 × 10^20 molecules The first part of your answer is correct, but the second part has an error in the exponent for the number of water molecules. Send me the next one 📸