Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. The solid copper metal will settle to the bottom of the beaker. The ratio of moles of water to one mole of a hydrate can be. Allow the reaction mixture to stand, without stirring, for 5 minutes to ensure complete reaction. All quantities are for one lab setup of each MiniLab or ChemLab for the entire course. While stirring, slowly add the iron filings to the hot copper(II) sulfate solution. Measure and record the exact mass of the filings. Measure approximately 2 g of iron metal filings onto a piece of weighing paper. Using tongs, remove the beaker from the hot plate. Stir until all of the solid is dissolved, but do not boil. Add 50 mL of distilled water to the copper(II) sulfate pentahydrate and heat the mixture on the hot plate at a medium setting. Place approximately 12 g of copper(II) sulfate pentahydrate into the 150-mL beaker and measure and record the combined mass. Measure and record the mass of a clean, dry 150-mL beaker. Is it important that you know you are using the hydrated form of copper(II) sulfate Would it be possible to use the anhydrous form Why or why not Procedure 1. Be sure to include safety precautions and procedure notes. Prepare all written materials that you will take into the laboratory. Turn off the hot plate when not in use.
#Chemlab 12 a mole ratio answers cracked#
Materials iron metal filings, 20 mesh copper(II) sulfate pentahydrate (CuSO 4 5H 2 O) distilled water stirring rod 150-mL beaker 400-mL beaker 100-mL graduated cylinder weighing paper balance hot plate beaker tongs Safety Precautions Calculate the moles of each metal and the mole ratio.Measure the masses of iron and copper.Observe a single replacement reaction.Problem Which reactant is the limiting reactant How does the experimental mole ratio of Fe to Cu compare with the mole ratio in the balanced chemical equation What is the percent yield Objectives This mole ratio can be compared to the ratio found in the balanced chemical equation. By measuring the mass of iron that reacts and the mass of copper metal produced, you can calculate the ratio of moles of reactant to moles of product. Name Date Class CHEMLAB 12 A Mole Ratio Iron reacts with copper(II) sulfate in a single replacement reaction.
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