Question

answer all parts:

2. You measured the volume of the CO2 by filling your flask with water and tightly inserting the stopper.

a. Why was it necessary to tightly stop the water-filled flask and then remove the stopper before you emptied the water into a graduated cylinder for measurement?

b. Would your calculated molar volume of CO2 (Vm) have been higher or lower if you had forgotten to stopper the flask before measuring the volume of the flask (V1)? Briefly explain.

3. Your source of CO2 in this experiment was dry ice. Would your experimentally determined

Vm of CO2 have been too high or too low if you had:

a. used a piece of dry ice that was too small to produce enough CO2 to completely fill the flask? Briefly explain.

b. a large piece of dry ice and not waited for the entire sample to sublime before you stoppered the flask and proceeded with the experiment? Briefly explain.

Answer 1

ay t keop the teprer lask. shy Lecaue, ealier han neeesny uoatrfalled meareriy we are mars air and cowe measued oith alopper und the toppur the flask So, Lshile meas aome valume f ocupying 0as volume of watir, in dler cesaning get accuat vlume meakremente, need to Atopper Calcukate th molar volume of co put n flask bafe pdlaper meauring the valume of the fak, te Calculatid oCo would be hiher tan melar volume the actunl moler volume .

Since, itou Aleer miasurn higher mdar volum is dire ctly e e than the actua v Alpo Alko propation to Herce Loil ethigher V than e actual. Lse

Ans టల use very srmal piece of dry ice, thaf oill produce insufficent amocunt of lask. Eventhersgh Coinsufficient, it wille volume oftlask ccupy the to tal That wi reduce tRe Mdar voluna V of co Lచి U becomes to nct aat unt all ^olid piecea ou If we on theHaik, put Atepper aud if we the ask to Ahatter due to Cause increaed pressure