LAMPIRAN PERHITUNGAN 1. Pemanasan KClO3 ( 1 mol gas O2) T0= 0 0C = 273oK P0 = 1 atm r (untuk air) = 0,8 Reaksi : 2KClO3 (s) β 3O2 (g) + 2KCl(s) Massa KClO3= 0,100 g n KClO3=
0,100 g 122,5 π/πππ
= 0,0008 mol
3
n O2= 2 x 0,0008 mol = 0,0012 mol a.
Pengulangan ke-1 ( h = 0,135 m, T = 70oC)
ππππ = ππππ π ππππ 103 ππ π = . 9,8 2 . 0,135 π 3 π π ππ = 1323 ππ 2 = 1323 ππ ππππππ = ππππ β πͺ = 1323 ππ β 3,95 πππ»π = 1323 ππ Γ
1 ππ‘π 760 πππ»π Γ β 3,95 πππ»π 1,01 Γ 105 ππ 1 ππ‘π
= 6,01 πππ»π ππππ = ππππππ β ππ―π πΆ (π β π) = 6,01 πππ»π β 33,8 πππ»π(1 β 0,8) = 6,01 πππ»π β 6,76 πππ»π = β0,75 πππ»π = β0,75 πππ»π π₯ π½=
1 ππ‘π = β0,0009 ππ‘π 760 πππ»π
ππΉπ» π· =
0,0012 πππ Γ 0,082
πΏ.ππ‘π Γ 304 πΎ πππ.πΎ
β0,0009 ππ‘π
= β33,23 πΏ
π· π½ π»π π»π·π
π½π =
β0,009 atm Γ β33,23 L Γ 273K 304 K x 1 atm
=
= 0,026 πΏ π½π π΄ππ πΆπ
π½π = =
0,026 πΏ 0,0012 πππ
= 21,67
πΏ πππ
b. Pengulangan ke-2 ( h = 0,1 m, T = 31oC) ππππ = ππππ π ππππ 103 ππ π . 9,8 2 . 0,1 π 3 π π ππ = 980 ππ 2 =
= 980 ππ ππππππ = ππππ β πͺ = 7,37 ππ β 3,95 πππ»π = 7,37 ππ Γ
1 ππ‘π 760 πππ»π Γ β 3,95 πππ»π 5 1,01 Γ 10 ππ 1 ππ‘π
= 3,49 πππ»π ππππ = ππππππ β ππ―π πΆ (π β π) = 3,42 πππ»π β 33,8 πππ»π(1 β 0,8) = β0,0044 ππ‘π PV = nRT π½=
ππΉπ» π· =
πΏ.ππ‘π Γ 304 πΎ πππ.πΎ
0,0012Γ 10β3 πππ Γ 0,082
β0,0044 ππ‘π
= β6,79 πΏ π·π½ π·π π½π = π» π»π π½π =
π· π½ π»π π»π·π
β0,0044 atm Γ β6,79 L Γ 273K 304 K x 1 atm
=
= 0,026 πΏ π½π π΄ππ πΆπ
π½π = =
0,026 πΏ 0,0012 πππ
= 21,67
c.
πΏ πππ
Pengulangan ke-3 ( h = 0,104 m, T = 31oC)
ππππ = ππππ π ππππ 103 ππ π = . 9,8 2 . 0,104 π 3 π π ππ = 1019,2 ππ 2 = 1019,2 ππ ππππππ = ππππ β πͺ = 1019,2ππ β 3,95 πππ»π = 1019,2 ππ Γ
1 ππ‘π 760 πππ»π Γ β 3,95 πππ»π 1,01 Γ 105 ππ 1 ππ‘π
= 3,72 πππ»π ππππ = ππππππ β ππ―π πΆ (π β π) = 3,7 πππ»π β 33,8 πππ»π(1 β 0,8) = β3,04 πππ»π = β0,004 atm PV = nRT π½=
ππΉπ» π· =
0,0012 πππ Γ 0,082
β0,004 ππ‘π
= β7,48 πΏ π·π½ π·π π½π = π» π»π π½π =
πΏ.ππ‘π Γ 304 πΎ πππ.πΎ
π· π½ π»π π»π·π
=
β0,004 atm Γ β7,48 L Γ 273K 304 K x 1 atm
= 0,026 πΏ π½π = =
π½π π΄ππ πΆπ 0,026 πΏ 0,0012 πππ
= 21,67
πΏ πππ
Vmrata-rata
=
21,67
L L +21,67 +21,67 mol mol
3
= 21,67 L/mol
2. Menghitung Volume Molar Gas CO2 (reaksi Na2CO3dengan H2SO4) Na2CO3(s) + H2SO4(l) ο Na2SO4(aq) + H2O(l) + CO2(g) Massa Na2CO3= 0,1 gram m
Mol Na2CO3 = Mr =
0,107 g g mol
106
= 0,001 mol
Massa H2SO4 = π x v = 1,84 g/ml x 3 ml = 5,52 g π
Mol H2SO4
= ππ 5,52 g
= 98 π/πππ = 0,056 mol Mol CO2 = mol Na2CO3 = 0,001 mol Na2CO3(s)
H2SO4(l)
CO2(g)
M
0,001 mol
0,056 mol
-
R
0,001 mol
0,001 mol
0,001 mol
S
-
0,055 mol
0,001 mol
Pengulangan 1 ( h= 0,043 m, T= 31 oC) Pbar= ππππ . g. h =
103 ππ π3
π
. 9,8 π 2 . 0,043 π ππ
= 421,4 ππ 2 =421,4 Pa Ptotal = Pbar β C
= 421,4 ππ β 3,95 πππ»π 1 ππ‘π 760 πππ»π = 421,4 ππ Γ Γ β 3,95 πππ»π 1,01 Γ 105 ππ 1 ππ‘π = 3,17 πππ»π β3,95 πππ»π = β0,78 πππ»π Pgas = ππππππ β ππ―π πΆ (π β π) = β0,78 πππ»π β 33,8 πππ»π(1 β 0,8) = β0,754 πππ»π = β0,0099 ππ‘π PV = nRT π½= V=
π§ππ π
0,001 mol x 0,082 L.
atm mol.K
x 304 K
β0,0099 atm
= -2,51 L
π·. π½ π·πΆ π½πΆ = π» π» π½π =
PV T
x
Tπ Pπ
=
β0,0099 atm x -2,51 L 304 K
x
273 K 1 atm
= 0,022 L 0,022 πΏ
Vo
Vm = mol CO = 0,001mol = 22L/mol 2
Pengulangan 2 (h= 0,025 m , T=31oC) Massa Na2CO3= 0,1 gram m
Mol Na2CO3 = Mr =
0,1 g
g mol
106
= 0,0009 mol
Massa H2SO4 = π x v = 1,84 g/ml x 3 ml = 5,52 g Mol H2SO4
π
= ππ 5,52 g
= 98 π/πππ = 0,056 mol Mol CO2 = mol Na2CO3 = 0,001 mol Na2CO3(s)
H2SO4(l)
CO2(g)
M
0,0009 mol
0,056 mol
-
R
0,0009 mol
0,0009 mol
0,0009 mol
S
-
0,00551 mol
Pbar= ππππ . g. h =
103 ππ π3
π
. 9,8 π 2 . 0,025 π
ππ
= 245 ππ 2 = 245 Pa Ptotal = Pbar β C = 245 ππ β 3,95 πππ»π 1 ππ‘π 760 πππ»π = 245 ππ Γ Γ β 3,95 πππ»π 1,01 Γ 105 ππ 1 ππ‘π = β2,11 πππ»π Pgas = ππππππ β ππ―π πΆ (π β π) = β2,11 πππ»π β 33,8 πππ»π(1 β 0,8) = β0,011 ππ‘π PV = nRT π§ππ π
π½= V=
0,0009 mol x 0,082 L.
atm mol.K
x 304 K
β0,0111atm
= -2,04 L
π·. π½ π·πΆ π½πΆ = π» π» Vo =
= Vm =
PV T
x
T0 P0
β0,011 atm xβ2,04 L 304 K Vo
x
273 K 1 atm
= 0,020 L
0,020 πΏ
= 0,0009mol = 22,22 L/mol
mol CO2
Vm rata-rata = =
ππ 1+ ππ 2 2 22 L/mol +22,22 L/mol 2
= 22,11 πΏ/πππ
0,0009 mol