Lab- Determining The Molar Volume Of A Gas

Question 1

0.15 grams of Mg is combined with HCl to produce H*2 gas. If the reaction occurs at 25°C in a 150 ml container, what is the theoretical pressure change?

Answer 1

102 kPa

Question 2

% yield= theoretical yield/actual yield (100)

Answer 2

False

Question 3

A student measures a pressure increase of .25 atm while collecting the H*2 gas produced from the reaction of Mg with HCl. The theoretical pressure change is .29 atm. What is the % yield?

Answer 3

86%

Question 4

A student is collecting the gas produced from the reaction of 1.5 grams of Mg with excess HCl. When the reaction is complete, how many moles of H*2 should have been produced?

Answer 4

.062 moles

Question 5

When 5 ml of HCl was added to the flask, 5 ml of air was removed. This was done so that _____.

Answer 5

There was still 140 ml of volume available for the reaction

Question 6

When performing calculations with gases, it is appropriate to use the Celsius temperature scale.

Answer 6

False