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TECHNICAL TREATISE ON SOAP AND CANDLES.

ALKALIMETRY.

grains) potash deducted 6.0878 grammes (93.9 grains) remain for the carbonate salts. If these were pure carbonate of potash, there would be therein 1.938 grammes (29.92 grains), and, if pure carbonate of soda, 2.027 grammes (31.28 grains) carbonic acid contained therein. We have, however, above found 1.977 grammes (30.51 grains) carbonic acid, and it follows hence, that the potash contained also carbonate of soda. At the same time thsre are in the relations of the carbonate value to the potash and soda the conditions given, according to which the corresponding quantities of carbonate of potash and carbonate of soda may be calculated. = 0.38 gramme (5.86 grains) carbonate of As, however, such calculations are not familiar to every person, the following table has been calculated. It contains in the first column from 1 to 100 per cent, progressively, the corresponding quantities of the two carborates; in the second the standard nitric acid in cubic centimetres, wlich is requisite for the neutralization of 1 gramme (15.43 grains) of such a mixture. Inasmuch as our solution contains in 100 cubic centimetres (3.38 fl. ozs.) 6.0878 grammes (93.9 grains) carbonates of potassa and soda, we have, in order to possess 100 grammes (1543 grains) carbonate of a salt, to deduct from the same 16.4 cubic centimetres (0.55 fl. ozs.), and to titrate witli nitric acid. In the present case 14.75 cubic centimetres (0.50 fl. oz.) of nitric acid were applied, which, according to the table, corresponds with the v.ilue of 6.25 per cent, carbonate of soda, so that in 6.0^78 grammes of the carbonate ot salts, 6^254 x 6.0878 "100 soda are contained.

Mixture of carbonate of potabk and carbouate of sod*.

1.00 grm, KO, CO,+0,00 grra. Jia

0.99 u " « 001 " 0.98 " " » 0.02 " It 41 0.97 l " 003 '* 11 '' 0.96 '

" 0 04 " 41 ft 0.95 l " 005 " *t "* 0 94 v i « 0.06 " 11 tl 0.9S *

0.07 " 11 11 o.as ' i »• 0.08 * * " 0.91 ' i i 0.09 * t 0.90 '

0.10 '

il 0.89 ' t t 0.11 4 1 (t 0.88 '

4 0,12 ' t 0.87 *

I 0.13 '

It 0.8*5 '

• 0.14 '

11 0.85 '

1 0.15 '

(1 0.84

1 016 '

It 0.83

' 0.17 '

14 0 83

1 fl.18 ' 4 t( 14 0.81 ' * S 0.1» '

0.80

' 0 30 '

0.79

' 0.31 '

i li 0.78 t 1 " C.32 "

' " 0.77 t ' " 0.23 '

k 4i 0.76

C.24 '

t 1* 0.75 i

1 li tt 0.74 t 4 0.26 i I< 1 0.73 1

' C.27 t li t 0.73 < 1 C.S8 1 't I 0.71 t ' C.29 i 1< 4 0.70 u C.30 (ill 0.69 it t « €31 ? ;; i 0.08 n 1 C.33 v li 4 0.67 "

C.88 < It * 0.66 14 1 " C.34 1 bl * 0.63 14

• C.35 i t( 4 0 64 It C.86

i \ 0.63 "

C.37

t 1 0.C3

0.38

( ' 0 61 "

C 39 * ? 1 0.60 11 it 0 40 1 tl 1 0.59 11

" (.41 t II 4 0.58 11 *' 0.42 U tt 1 0.57 It •• » C.43

0.56 u •* 0.44 it It t 0.55 41 " " 0,4.i

It I 0 54 (I ** " 0.46 ' i (t I 0.53 " " " 0.47

0.53 " 0.48 1

0.51 " *? *' 0.49

0.50 " " " 0.50 U 1 J 0.49 " 0.51 t ( 0.48 li 0 5S 11 4l Amount cf nitric acid required f«-r one gramm of the tflix-id alkalies. 14 47 ccm. 14 51 " 14 56 " 14 60 " 14. to " 14 69 " 14 78 14 83 14.87 14.92 14 96 15 00 15 05 15 09 15 14 15.19 15.23 15.38 15 31 15.35 15.39 15.44 1548 15.53 15.57 15.fi I 15.06 U70 15,75 15.7Q 1.183 15.88 15.02 15.1*7 16 01 16.05 16.10 16.14 10.19 1U.SS 16.87 16.83 1C.36 16.41 1C.45 1C.49 If. 54 H 58 Id. 63 16.67 If.71 16.76 14 190

TECHNICAL TREATISE ON SOAP AND CANDLES.

ALKALIMETRY.

191 Amount of nitric acid Hixlnta of tftrbonate of p>!a»b xai carbonate of *oda. required for one gramma ot the mixed alkaHed. 0.47 grm. KO, CO^-f 0.53 grm. NaO, CO, 16.80 ccm, 0.46

" 0.54 "

10.85

0 45 11 1

" 0.55

it it 16.89

0.43 11 I

0..18

ti 11 17.02 * 0.41 11 1

" o.r.9

tt tt 17.07 1 0.40 tt t " 0.60 it It it 17.11 1 0.39

i i' 17.20 ' 0.37 11 '

1 0.63

0.30 " '

0.64

17.28 ' 0.S5 tt 1 0.65 i II 17.33 t 0 34 tt 1 0.66 '

' ' 17.37 * 0 33

" i ' 0.67 i t 17.41

0.32

' '

0.08

1 1 17.46

0.31

1 (

' 0.69

1 ti 17-50

0.30

' '

0,70 t 1

17.55

0.29

t I ' 0.71

' 1 17 59

0.28 •' '

0.72

* 17.fi3 0.27 tl t ' 0 73 *

•

17.67

0,26 11 >

0 74

t 17.71 l t 0.25

' 0.75

1 t 17.76 '

0.24

1 1

0.76 t * 17.80 '

0.23

* '

' 0 77 1

t 17 84 '

0 33

1 i ' 0.78 'i

i t 17.89 i 0.21

: 1

1 0.79 t

t t 17.93 t 0.20

i i ' 0 80

' ' 17.97 '

0.19

i i 1 0.81 *

t 1 18.02 " 0.18

« *

0*3 *

> 1 18.06

0.17

0.83 <

i i 18.10 " 0.16

1 1

( 0 84

' ' 18.15 ' i 0.1.1

0 85 t 18.19 ' t 0.14

1 0,86

• ' 18.23 ' • 0.13

' >

0.87

4 18.27 4 0.12

( 0.88

'

18.32 ' i 0.11

0.89 <

i 18.36 " 0.10 n ; ' 0.90 •

t 18.40 " 0.09 It ; 1 0.91

1 t 18.45 " 0 08 1(

0.92

' t 18.49 ' 1 O.07 It 0.93 t 18.53 '

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