Last Na First Name: Analysis- Show your work, include units and correct signifie

Question

Last Na First Name: Analysis- Show your work, include units and correct signifieant digitst Part 2: Ma(s)+ HClag) reaction Mg(s) + 2 HCI(aq) MgCl2(g) + H2(g) PV-nRT 1. Based on the mass of Mg used, calculate the moles of H-d(g) theoretically produced in each tri a. Trial 1: o.otla M 24 u 5o.escliseaja H2 b. Trial 2: 6. 24.3 t Mol H2 c. Trial 3: 0.0 Me ImoIM The volume of hydrogen gas produced was not at standard temperature and pressure. Convert the volume at the pressure and temperature of the experiment to a volume at standard temperature and pressure: STP (T- 273.1SK and P 1.00 atm) for each trial. 2. a. Trial 1 b. Trial 2: c. Trial 3 Experiment 11 Page 8

Explanation / Answer

We know that

PV=nRT is ideal gas equation

Where P=Pressure

V=Volume

n=number of moles

T=Temperature in K

R=Gas constant=0.08206 L atm/ mol K

So V=nRT/P .... equation 1

At STP, T=273 K, P=1 atm

For above trials we can calculate V for given number of moles of hydrogen gas as calculated in the trials by substituting the values for n, T, P and R in equation 1

Trial 1

n=0.000452475 mol

So V=(0.000452475 molx0.08206 L atm/mol Kx 273 K)/1 atm

=0.0101 L=10.1 mL

For trial 2

n=0.000411523 mol

V=(0.000411523 molx0.08206 L atm/mol K x 273 K)/1 atm

=0.0092 L=9.2 mL

For trial 3

n=0.000576 mol

V=(0.000576 molx 0.08206 L atm/mol Kx 273 K)/1 atm

=0.0129 L=12.9 mL

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