Question

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PRELAB name: Jasmine Cancios 1. What is the ideal gas law? Write the equation below and label & the components of the equation. Write the balanced chemical equation for the reaction between Mg and HCl below include phases of each constituent. Mg + НСІ If a student used an excess of HCl to dissolve 0.045 grams of pure Mg ribbon, and collected the gas in a test tube over water how much H, gas could she produce, calculate the answer in moles. What is the vapor pressure of water at 22 °C, this can be found in the table on page one. If the total pressure inside the test tube is 1 atm, what is the pressure of the hydrogen gas? This is explained on the first page of the lab. If the volume of gas actually collected was 45 ml and the temperature in the room is 22 °C, how many moles of hydrogen gas is present, use the ideal gas law. For pressure use the pressure of hydrogen gas from #4 above. 6. Calculate the percent error if #3 is the accepted value for moles of H, and #5 is the experimental value.

Answer 1

used this the poz were It 0.05 moles of topogt 3NaHCO3 I more 3 more Dios more, & loco mateCoz If o-os more thao, then = 0.15 more reawred While we have only 0.029 mores et maticos So only 0.0oogag more (0.989 milli mores) will react. So the remaining amount of topoq = 50 - 0.989 = ug.ott millimores = d.ougoll mones ® produced amount of co₂ = 0.029 mores

Peast-lab o ih podt 3 Marco can) - 34043co, & Na, Poa. I mole 3 more 3 more 3 more more Reaction takes place as per Stoichiometric ratio If 3 moles Natcoz then required tgp04 = 1 mole Marcos then required 180o = 1/2 more It t more Given - hen wd of Narcoz = 2.5gm molar mass (hang) = au huy Given wit (in gram) No. of moles of NaHCO3 = - molar mass (am moll) No. of mores of Marco₂ = 25 mole = 0.029 more Hz Pod If 0.029 moles of Narcoz then required will be 0.029 = 0.000989 more Roño.gg millimole

③ mg + 2H00 si (296) 1 mol 2 mole mgch (s) & th () I mol No. of I mol mokes As we know any chemical reaction takes place. as per Stoichiometric ratio. then I mol of P so it I mol magnesium is used Hydrogen will produce. - dous gram magnesium = 0.001852 mol of magnesium CAs molar mass of mg = 24.3 gm mot) react with excess of mol magnesium zd so it 0:00 1852 He it moles of hydrogen-gees will produce 0.001852

③ mg + 2H00 si (296) 1 mol 2 mole mgch (s) & th () I mol No. of I mol mokes As we know any chemical reaction takes place. as per Stoichiometric ratio. then I mol of P so it I mol magnesium is used Hydrogen will produce. - dous gram magnesium = 0.001852 mol of magnesium CAs molar mass of mg = 24.3 gm mot) react with excess of mol magnesium zd so it 0:00 1852 He it moles of hydrogen-gees will produce 0.001852

1. Ideal goes equation PV = nRT (Ideal gas equation) P = pressure (in atm) v- volume of gas (in litre) n = No. of mores of gas R = T= Gas constant = 0.0821 Temperature (In Kelvin) lid-atun molik Ideal gas equation is a mathematical equation which explain combinely Boyle's law challels law and avogadrols law, - mg mach & (8) the (9) + 2H4 (aq.)