Question 57
Work in pairs. Carry out these steps to test for carbon dioxide.
1. Prepare the apparatus as shown in Figure 9.20, but leave the stopper out of the first test tube.
2. Use separate droppers to put 5 cm³ of sodium hydrogen carbonate solution and 5 cm³ of dilute ethanoic acid into the first test tube.
3. Place the stopper back into the first test tube so that the two test tubes are connected. Record your observations.
1. Prepare the apparatus as shown in Figure 9.20, but leave the stopper out of the first test tube.
2. Use separate droppers to put 5 cm³ of sodium hydrogen carbonate solution and 5 cm³ of dilute ethanoic acid into the first test tube.
3. Place the stopper back into the first test tube so that the two test tubes are connected. Record your observations.
