Molar Volume of a Gas

HW due today: Gas problem set #1 & 2.
HW: Molar Volume of a Gas Lab is due Wednesday! Also, there is a WA reading 5.4.
 *If you have questions from the two worksheets, we will go over it in class tomorrow.


Hello, this is Eunice! Today in class we did the Molar Volume of a Gas Lab the entire class period. Our lab goal is to measure the molar volume of hydrogen gas at STP. If you don't know what molar volume is, it is the volume occupied by one mole of a gas is called the molar volume. During this experiment, we measured the molar volume of hydrogen gas as standard temperature and pressure. The reaction is Mg(s) + 2HCl(aq) --> MgCl_2(aq) + H<sub>2(g).


First, we got a piece of magnesium and tied it around a copper wire like a ball.  
Then, my partner got 10 mL of hydrochloric acid and poured it at the bottom of a eudiometer. Next, we filled a beaker with 600mL of tap water.  
Later, we used a smaller beaker to put in water into the eudiometer to the top. We put in the copper wire with magnesium inside, plugged it with a rubber stopper, and flipped the eudiometer over into the tap water. There was a lot of bubbling and sizzling inside, so we waited until there were no bubbles left. Then we measured the volume inside, and we got 26.3 mL. Share your trial data with your table and make sure you have both trial 1 and trial 2. 
After you record the length of Mg ribbon, mass of Mg, evidence of chemical reaction, volume of H2 gas, barometric pressure, room temperature, and water vapor pressure, go on to the calculations part! 

BTW, remember:
Total Pressure= pressure of H2O + pressure of H2.
10cm of Mg=.1407grams
Barometric pressure=30.04 in Hg.</sub> 

                                     Get 600mL of water and be ready to flip over the eudiometer!

                                                 This is not a great picture. But you should tie the magnesium
                                                with copper wire like a ball. And put in rubber stopper.

                                           Flip over the eudiometer quickly and carefully.
                                            You will see lots of bubbles!! (H2)

                                                  This is an awesome picture of the bubbles!
                                                         The magnesium disappeared.
                        
                     

                       

Next Scribe is: BENYA C