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
Here's the solution for question (c)ii: Step 1: Calculate the molar mass of sodium trioxocarbonate (IV), Na_2CO_3. Given atomic masses: Na = 23, C = 12, O = 16. Molar mass of Na_2CO_3 = (2 × 23) + 12 + (3 × 16) = 46 + 12 + 48 = 106 g/mol Step 2: Convert the given volume from cm^3 to dm^3. Volume = 250 cm^3 = (250)/(1000) dm^3 = 0.250 dm^3 Step 3: Calculate the number of moles of Na_2CO_3 needed. The formula for moles is: Moles = Concentration × Volume. Moles of Na_2CO_3 = 0.2 mol/dm^3 × 0.250 dm^3 = 0.05 mol Step 4: Calculate the mass of Na_2CO_3 needed. The formula for mass is: Mass = Moles × Molar mass. Mass of Na_2CO_3 = 0.05 mol × 106 g/mol = 5.3 g The mass of sodium trioxocarbonate (IV) needed is 5.3 g. Send me the next one 📸