Question 10
In this experiment, add 50 ml of dilute hydrogen peroxide (1.5 M) to a conical flask, then add 1 g of yeast. Quickly fit a stopper connected by a delivery tube to an inverted, water-filled measuring cylinder in a water trough. Collect oxygen over water and record its volume every 30 seconds. Wear safety goggles and gloves.
Plot the volume of oxygen gas against time on graph paper. Use your measured volumes at 0, 30, 60, 90, 120, 150, 180 and 210 seconds.
Plot the volume of oxygen gas against time on graph paper. Use your measured volumes at 0, 30, 60, 90, 120, 150, 180 and 210 seconds.
