Report Sheet Quantitative Preparation Of A Gas Data Table Mass Of Magnesium Metal D 243ml Volume Of Hydrogen Gas Collec 1 (55.1 KiB) Viewed 14 times
Report Sheet Quantitative Preparation Of A Gas Data Table Mass Of Magnesium Metal D 243ml Volume Of Hydrogen Gas Collec 2 (43.22 KiB) Viewed 14 times
Report Sheet Quantitative Preparation of a Gas Data Table mass of magnesium metal D. 243mL volume of hydrogen gas collected 240mL temperature of gas 20.0°C · barometric pressure 0.9943 atm vapor pressure of water at T of gas 0.0230 atm Calculations (Carry out to the proper number of significant digits.) 1. Partial pressure of hydrogen gas. Earometric 0.9943 atm -0.0230 m=0.9713atm apor na vol H n = 1000 0.913x0.246 0.621 x 2934 = 0.2389398 24.0553 mass mg 2. Moles of H2 gas produced calculated from the volume. Vol H₂ = 246mL RT 246 temp gas L=0.246 & ideal gos Temp=2020+273=K+K=293K Law arometric 3. Theoretical yield of lotes of hydrogen gas from mass of = 0.0009 beteg oftt2 lapor magnesium. (Write a balanced equation first.) I mo! Hz ogin wl 24 real gas law 4. Percentage error of your experiment. 0.0097 0.dox 100 = 1% percent - Actual-expected. = error expected 129 0.243gx Imol H2 Imolmg 0.010 mole 0.009-0.do 0.016 x 100
Critical Thinking Questions 1. List a possible source of error in this experiment. Would this error cause your moles of hydrogen to be too high or too low? Explain. which can cause an error in the hydrogenmdes or the container we set was not scaled properly of gas. would be less H2 2. Convert your volume of hydrogen gas at lab conditions to a volume et STP 3. Using your answer from Question 2 and the theoretical number of moles of hydrogen you produced, calculate the molar volume of a gas at STP. (Hint: What should your answer be? What are the units?) 4. Calculate the molar mass of a gas if 0.74 g of the gas had a volume of 425 ml at 32°C and 755 mm Hg. V=425ML=0.425L T=32c +273=305 P=755 mm = 755 latm = 760.commt atm 760 ev=RT 165 x 0.425=0.74 x 0.082\ x 305 holour 077X0.0821 x 3008700 - 44g/mol Mass 755 X 0.425 130 760 w doar
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