Can someone please finish and re-do trial 1????????? I filled in what I thought,
ID: 819956 • Letter: C
Question
Can someone please finish and re-do trial 1????????? I filled in what I thought, but I feel like it's wrong. I also don't know how to do the 2 at the bottom. If you can explain, I'll give trial 2 a try by myself. Thanks.
Trial 1
Trial 2
Trial 3
a
Mass of zinc used (g)
.50
b
Volume of 6M HCl used (mL)
10 mL
10 mL
c
Molar mass of zinc (g/mol)
65.39 g/mol
65.39
d
Moles of zinc reactant
.004 mol
.008m
e
Moles of HCl reactant (Calculate from M and V)
.274
.274
f
Identity of Limiting Reactant
Zinc
g
Moles of hydrogen produced calculated using stoichiometry from limiting reactant (mol)
.004
.008
h
Volume of gas produced at initial room temperature of 21.5
Trial 1
Trial 2
Trial 3
a
Mass of zinc used (g)
.50
b
Volume of 6M HCl used (mL)
10 mL
10 mL
c
Molar mass of zinc (g/mol)
65.39 g/mol
65.39
d
Moles of zinc reactant
.004 mol
.008m
e
Moles of HCl reactant (Calculate from M and V)
.274
.274
f
Identity of Limiting Reactant
Zinc
g
Moles of hydrogen produced calculated using stoichiometry from limiting reactant (mol)
.004
.008
h
Volume of gas produced at initial room temperature of 21.5
Explanation / Answer
Moles of HCL reactant should be calculated using M=n/V or n=M*V n=( 6M ) * ( .01 L ) = 0.06 mol HCL
1 : 1 ratio of zinc and H2 gas, using PV=nRT (1 atm)V=0.0038 mol H2 *0.082057* 298 K
V= 0.0929 L
1 atm=101,300 Pa = 760 torr 298K=25 degrees C