Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: Laboratory Activity: STOICHIOMETRY
Description: This is my laboratory activity in chemistry for engineers subject. It is all about STOICHIOMETRY.
Description: This is my laboratory activity in chemistry for engineers subject. It is all about STOICHIOMETRY.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
STOICHIOMETRY
Laboratory Activity # 8
Stoichiometry – calculation based on chemical reaction
...
& By Mole Method
#3 Al Br3 + Na2S
50g
g=?
Na Br + Al2S3
g=?
g=?
2AlBr3 + 3Na2S
50g
g=?
2AlBr3 = 2(Al) + 6(Br)
= (2)27 + 6(80)
= 54 + 480
= 534
6NaBr + Al2S3
g=?
g=?
3Na2S = 6(Na) + 3(S)
= 6(23) + 3(32)
= 138 + 96
= 234
6NaBr = 6(Na) + 6(Br)
= 6(23) + 6(80)
= 138 + 480
= 618
Al2S3 = 2(Al) + 3(S)
= 2(27) + 3(32)
= 54 + 96
= 150
By Ratio and Proportion:
2AlBr3 + 3Na2S
50g
g=?
=
(
6NaBr + Al2S3
g=?
g=?
)
=
534 x = 50(234) g
𝑥=
(
276 x = 50(618) g
11700
g
534
𝑥=
x = 21
...
87 g
Check:
Al Br3 + Na2S
50 g 21
...
91 g
Na Br + Al2S3
57
...
04 g
71
...
04 g
)
50g
g=?
𝑁𝑜
...
09363296 mol
Weight (3Na2S )
= No
...
09363296 mol x 234 g/mol
= 21
...
of mole × Molecular weight
= 0
...
87 g
Weight (Al2S3)
= No
...
09363296 mol x 150 g/mol
= 14
...
91g
71
...
87 g
14
...
91 g
=
H2O
g=?
2H2O
g=?
By Mole Method:
2H2 + O2
g=?
50g
𝑁𝑜
...
5625 mol
Weight (2H2 )
= No
...
5625 mol x 4 g/mol
= 6
...
of mole × Molecular weight
= 1
...
25 g
Check:
2H2
+ O2
g=?
50 g
6
...
25 g
2H2O
g=?
56
...
25 g
=
#5 Mercuric Phosphate + Zinc Nitrate
g=?
g=?
Hg3O8P2 + 3Zn(NO3)2
g=?
g=?
→
Zinc Phosphate + Mercuric Nitrate
170g
g=?
Zn3(PO4)2 + 3Hg(NO3)2
170g
g=?
By Mole Method:
Hg3O8P2 + 3Zn(NO3)2
g=?
g=?
𝑁𝑜
...
𝑜𝑓 𝑀𝑜𝑙𝑒 (2AlCl3)
2AlCl3
189 g
=
→
6NH4Cl
g=?
+
Al2O12S3
g=?
6NH4Cl
+
g=?
227
...
5 g
Al2O12S3
g=?
244
...
716 mol
Weight (3H8N2O4S)
= No
...
716 mol x 396 g/mol
= 283
...
of mole × Molecular weight
= 0
...
66 g
Weight (Al2O12S3 )
= No
...
716 mol x 342 g/mol
= 244
...
5 g
472
Title: Laboratory Activity: STOICHIOMETRY
Description: This is my laboratory activity in chemistry for engineers subject. It is all about STOICHIOMETRY.
Description: This is my laboratory activity in chemistry for engineers subject. It is all about STOICHIOMETRY.