When starting he experiment, you and your partner are heating your askin a 50 ?

Question

When starting he experiment, you and your partner are heating your askin a 50 ? water bath. You have waited about 5 minutes and feel like it's at the correct tempera ure. You remove the flask and add a whole Alka Seltzer tablet. You look in the flask to make sure that it is reacting, using about 30 sec of your time, and then a baloon to the top. You record the time from that point, pinch off the baloon and tie it. Choose the options that best describes way to correct incorrect actions in this scenerio. Break the Alka Seltzer tablet into pieces before adding to the flask. Begin timing as soon as the baloon is added to the top of the flask. Measure 20 seconds from adding the baloon, pinch, twist and tie off balloon for measuring volume Heat all flasks to 100 °C to determine the reaction rate. Measure the temperature of the water inside the flask to determine if it has reached the correct temperature. Keep flask in the water bath while the Alka Seltzer tablet is added. O Add baloon immediately to the top of the flask to capure as much as the gas as possible. Wait 10-15 minutes for the temparature to reach the desired value Ten seconds after the baloon as been added, pinch, twist and tie off the baloon for volume measurement. Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

Explanation / Answer

The following options describe the correct options.

1) Break the Alka Seltzer tablet into pieces before adding to the flask.

This will ensure that the tablet has a large surface area for the reaction to occur.

2) Begin timing as soon as the balloon is added to the top of the flask.

This will ensure that no gas escapes to the atmosphere.

3) Measure the temperature of the water inside the flask to determine if it has reached the correct temperature.

This is done to make sure that the temperature of the reaction reaches the desired 50°C value.

4) Keep the flask in water bath while the Alka Seltzer tablet is added.

This step is necessary so that the temperature of the water in the flask doesn’t fall below the desired 50°C.

5) Add balloon immediately to the top of the flask to capture as much gas as possible.

This is done for the same reason as (2) above.

6) Wait 10-15 minutes for the temperature to reach the desired value.

Depending on the rate of heating, its best to wait for 10-15 minutes to ensure that the water has reached the temperature of 50°C.

7) Ten seconds after the balloon has been added, pinch, twist and tie off the balloon for volume measurement.

As per the experimental procedure, a maximum time of ten seconds must be allowed for the gas to fill up the balloon at 50°C.

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