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Calculations Practice

The document contains various calculations and chemical equations related to stoichiometry, thermodynamics, and electrochemistry. It includes molarity calculations, reaction equations involving iron and chromium, and energy changes in reactions. The data appears to be part of a chemistry problem set or examination.

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1235ubritta
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16 views8 pages

Calculations Practice

The document contains various calculations and chemical equations related to stoichiometry, thermodynamics, and electrochemistry. It includes molarity calculations, reaction equations involving iron and chromium, and energy changes in reactions. The data appears to be part of a chemistry problem set or examination.

Uploaded by

1235ubritta
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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3

'
‘
o
1(a) [My(Nos >
-
Lego + UNO2 +
02

3 .
74 +
10-2g

to e
=
Mal

mal =
2 .
521915037 x 10-

PV = nRT

100 ,
000 + V = 1 260957519 10"
.
+ + 8 31x
.

100 ,
000 V = 0 .
34

V = 3 489 . + 13 .
95

= 17 . 4 cm
Q2) Fe 6Cr*
+
+

Fe >
- Fet + e

Crz0F + 1
+
>
- 2
*
+ 7420
+ Ge

6Fe2* + Cr207 + 144" >


- 2 + 6Fet
21 . 3 + 7420

0 .
Olso

mal = 3 .
195x10-7

1 .
917x10-3 is Is can

. 01917
0 mal in 250cm

10 019(7)
. x (SS 8 .
+ 32 1
.
+ 64 + 7(18)

= S .
327g
3) as 1520san +
12 lay - 22 +
50
N

↓
33 Sun .

0 .
100 maldni

: 3 35. +
10-3 1 675 +
10-3
.

x4 = 6 7x103 mal CCO-


o
.

6 7 3x23* 35 5x6
-

. x 10 .

=
4 .
16 %

4)00 = on -

Tos

Ou
Al2O3 >
- 302

-
1669 X J -324

um

OU = 2156 KJmal

US =
634 Jual

0 = 2156 -
50 634.

T =
3400k
""

6) 6 Fe
"
+
CrzOt
25 .
ca" 23 7 am .

=
0 Olmalden

↓
.

mal : 2 .
37 x10-

422x10-3
-
mal = 1 .
+10 = 1 422x10
.

mal
=as

Mal =
10 = 0 . 03598416697
277 9 .

0 .
04595416697 -
1 .
422410-2
Xloo
0 .
039 .. 7

- 60 .
5%
-
8
z
8
.
_ _
al 10 -
CU2

no-cu
no -
CUz

Carboxylate salt : Soap

b)(38 -
3(12 + 32) -
2(12 + 2) -
((2 + 1)

(12 + 3)xn(1-2)
#
=

ISS = 12 + 3 + 14n

14 = 140
n = 10

C) kou t KC
0 .
1

IS GSa
.

1 .
SGSX10-3 mal kou

= 7 .
504456528
= S .
939486328710-

= 3

-638

= 1 450
.

- (00

= 87 .
1 %

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