Insert the zinc sample into the eudiometer and press the stopper closed. When inserting the rubber stopper, let the exce
Posted: Thu Jul 07, 2022 1:53 pm
Insert the zinc sample into the eudiometer and press the stopper closed. When inserting the rubber stopper, let the excess water come out through the open hole in the stopper. Make sure no air is trapped in the tube as it will later be measured as hydrogen gas causing an error in your measurement.
Cover the hole in the stopper with your finger and invert the eudiometer into the 600 mL beaker that is setup under the burette clamp. Then clamp the eudiometer into the burette clamp.
The acid solution, being denser than water, will flow down the eudiometer, and react with the zinc producing hydrogen gas. The reaction will start slowly and speed up as it progresses. Bubbles of hydrogen gas will appear around the metal and float to the top of the eudiometer. The pressure of the gas will force the water level in the eudiometer down.
1) The hydrochloric acid used in this experiment was 3M --- what effect would be noted if the concentration of acid was increased to 6 M?
2) If the magnesium ribbon used in this experiment contained 3% MgO by mass, predict the effect of this on the volume of hydrogen gas produced.
Cover the hole in the stopper with your finger and invert the eudiometer into the 600 mL beaker that is setup under the burette clamp. Then clamp the eudiometer into the burette clamp.
The acid solution, being denser than water, will flow down the eudiometer, and react with the zinc producing hydrogen gas. The reaction will start slowly and speed up as it progresses. Bubbles of hydrogen gas will appear around the metal and float to the top of the eudiometer. The pressure of the gas will force the water level in the eudiometer down.
1) The hydrochloric acid used in this experiment was 3M --- what effect would be noted if the concentration of acid was increased to 6 M?
2) If the magnesium ribbon used in this experiment contained 3% MgO by mass, predict the effect of this on the volume of hydrogen gas produced.