IS 1890-8: Quantities and Units, Part 8: Physical chemistry and molecular physics

32 Pages·1995·1.9 MB·English

by  Bureau of Indian Standards

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timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 1890-8 (1995): Quantities and Units, Part 8: Physical
chemistry and molecular physics [PGD 1: Basic Standards]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS 1890 (Part 8) : 1995
0SI 8-13 : 2991

/ndian Standard
SEITITNAUQ AND UNITS
PART 8 PHYSICAL CHEMISTRY AND MOLECULAR PHYSICS
First Revision )
(
UDC 180.35

0 SIB 5991
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ GRAM
NEW IHLED 200011
August 5991 Price Group 10

b
Basic Standards Sectional Committee, MSD 1
NATIONAL FOREWORD
This Indian Standard (Part 8) (First Revision) which is identical with IS0 31-8 : 1992, issued by the
International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards
on the recommendation of the Basic Standards Sectional Committee (MSD 1) and approval of the
Management and Systems Division Council.
The text of the IS0 Standard has been approved as suitable for publication as Indian Standard without
deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention
is particularly drawn to the following:
Comma (,) has been used as a decimal marker while in Indian Standards the current practice is
to use a point (.) as the decimal marker.
Wherever the words ‘International Standard’ appear, referring to this standard, they should be
read as ‘Indian Standard.
This standard was first published in 1983. In this revision, following changes have been made:
a) The decision by the International Committee for Weights and Measures (CIPM) in 1980
concerning the status of supplementary units has been incorporated;
b) A number of new quantities and their units have been added such as extent of reaction, angle
of optical rotation, molar optical rotatory power and specific optical rotatory power; and
c) Six new chemical elements given atomic numbers 104 to 109 have been added in Annex A
(Normative).
ADDITIONAL INFORMATION
IS 189O/ISO 31 consists of the following parts, under the general title ‘Quantities and Units’:
international Standard Corresponding Indian Degree of
Standard Equivalence
IS0 31-O : 1992 IS 1890 (Part 0) : 1995 Quantities Identical

and units : Part 0 General principles

(first revision)
IS0 31-1 : 1992 IS 1890 (Part 1) : 1995 Quantities Identical
and units : Part 1 Space and time
(third revision)
IS0 31-2 : 1992 IS 1890 (Part 2) : 1995 Quantities Identical
and units : Part 2 Periodic and re-
lated phenomena (second revision)
IS0 31-3 : 1992 IS 1890 (Part 3) : 1995 Quantities Identical
and units : Part 3 Mechanics (second
revision)
IS0 31-4 : 1992 IS 1890 (Part 4) : 1982* Quantities, Technically
units and symbols : Part 4 Heat (first Equivalent
revision)
IS0 31-5 : 1992 IS 1890 (Part 5) : 1995 Quantities Identical
and units : Part 5 Electricity and
magnetism (first revision)
(Continued on third cove/j
IS 1890 (Part 8) : 1995
IS0 31-8: 1992
Indian Standard
SEITITNAUQ AND UNITS
PART 8 PHYSICAL CHEMISTRY AND MOLECULAR PHYSICS
First Revision)
(
ytilibissop fo gniylppa eht most tnecer snoitide fo eht
1 scope
sdradnats detacidni .woleb Members fo CEI dna 0SI
sihT trap fo 0SI 13 sevig seman dna slobmys rof niatniam sretsiger fo yltnerruc dilav lanoitanretnI
seititnauq dna stinu fo lacisyhp yrtsimehc dna .sdradnatS
ralucelom .scisyhp Where ,etairporppa noisrevnoc
srotcaf era osla .nevig 0SI .2991413 Quantities and units - Part 4: Heat.
0SI ,2991:9-13 Quantities and units - Part 9: Atomic
2 Normative references
and nuclear physics.
ehT gniwollof sdradnats niatnoc snoisivorp ,hcihw
hguorht ecnerefer ’ni siht ,txet etutitsnoc snoisivorp 3 Names and symbols
fo siht trap fo 0SI .13 tA eht time fo ,noitacilbup eht
snoitide detacidni erew .dilav llA sdradnats era tcejbus ehT seman dna slobmys rof seititnauq dna stinu fo
ot ,noisiver dna seitrap ot stnemeerga desab no siht lacisyhp yrtsimehc dna ralucelom scisyhp era nevig
trap fo 0SI 13 era degaruocne ot etagitsevni eht no eht gniwollof .segap
IS 1890 (Part 8) : 1995
IS0 31-8: 1992
PHYSICAL CHEMISTRY AND MOLECULAR PHYSICS seititnauQ
metI
.oN Quantity lobmyS noitinifeD Remarks
1.1-8 evitaler cimota ,A oitaR fo eht egareva mass rep ELPMAXE
mass atom fo na tnemele ot 21/l fo A&I) = 354,53
eht mass fo na atom fo eht ylremroF dellac .thgieit’ciinota
edilcun “C
l-8 2. evitaler ralucelom ,M oitaR fo eht egareva mass rep ylremroF dellac ralucelom
mass elucelom or deificeps ytitne fo .thgiew
a ecnatsbus ot 21/l fo eht ehT evitaler cimota or -ucelom
ssa; fo na atom fo eht edilcun ral mass sdneped no eht
C cidilcun .noitisopmoc
2-8 rebmun fo N Number fo selucelom or rehto
selucelom or rehto /natnemele seititne ni a system
yratnemele
seititne
3-B tnuoma fo ,n (9 tnuomA fo ecnatsbus si eno fo
ecnatsbus eht esab seititnauq no hcihw
eht IS si .desab
v may eb desu sa na evitanretla
ot n nehw n is desu rof rebmun
ytisned fo selcitrap ees(
.)1.01-8

4-8 ordagovA tnatsnoc L, N, Number fo selucelom dedivid N, = 220,6( 631 7 f
yb tnuoma fo .ecnatsbus 000,0 300 6) x 3z01 mol-’ ‘)
AN = N/n
1) CODATA nitelluB 63 (1986).
5-8 ralom ssam M ssaM dedivid yb tnuoma fo m si eht mass fo eht .ecnatsbus
.ecnatsbus
M = m/n
6-8 molar emulov ln“ emuloV dedivid yb tnuoma fo ehT molar emulov fo na laedi
.ecnatsbus sag ta 51,372 K dna
523,101 kPa si
V, = V/n V = (0,022 414 10 f
Or”d”o0O0 0 19) m3/mol ‘)
1) CODATA nitelluB 63 (1986).

2
c
” ‘-“p
IS 1890 (Part 8) : 1995
IS0 31-8 : 1992
Units PHYSICAL CHEMISTRY AND MOLECULAR PHYSICS
International
Item
Name of unit symbol for Definition Conversion factors and remarks
No.
unit
3-l a. eno 1 eeS eht ,noitcudortni esualcbus
.2.3.0
a.2-3 one 1 eeS eht ,noitcudortni esualcbus
.2.3.0
a.3-3 mole mol ehT mole si eht tnuoma ehT noitinifed seilppa ot dnuobnu -ta
fo ecnatsbus fo a system oms fo nobrac ,21 ta rest dna ni rieht
hcihw sniatnoc sa ynam dnuorg .etats
yratnemele seititne sa
ereht era atoms ni 210,0
kilogram fo nobrac .21
nehW eht elum si ,desu
eht yratnemele seititne
must eb deificeps dna
may eb atoms, mol-
,seluce ,snoi ,snortcele
rehto ,selcitrap or -iceps
deif spuorg fo hcus par-
selcit

a.4-8 lacorpicer ,elom mol-’
mole ot eht
rewop sunim
eno
5-8 a kilogram rep kg/mol M = 1 3e0 ,M kg/mol =
,M kg/km01 = rM lom/g
mole
erehw rM si eht evitaler ralucelom
mass fo a ecnatsbus fo etinifed
lacimehc .noitisopmoc
a.6-8 cibuc metre per m3/mol
elom
3
IS 1890 (Part 8) : 1995
IS0 31-8 : 1992
PHYSICAL CHEMISTRY AND MOLECULAR PHYSICS (continued) Quantities
item
Quantity Symbol Definition Remarks
No.
B-7 molar 7lru cimanydomrehT ygrene dedivid sihT ytitnauq si osla dellac
cimanydomreht yb tnuoma fo .ecnatsbus molar lanretni .ygrene
ygrene eeS 0SI .4-13
U, = U/n ralimiS snoitinifed ylppa ot
rehto molar cimanydomreht
,snoitcnuf rof elpmaxe
,,,(=I ,,A ,G
8-B molar taeh yticapac C, taeH yticapac dedivid yb eeS 0SI .4-13
tnuoma fo .ecnatsbus
C, = C/n
R-9 molar yportne l% yportnE dedivid yb tnuoma fo eeS 0SI .4-13
.ecnatsbus
,S = S/n
3-10.1 cimulov rebmun fo n Number fo selucelom or par-
selucelom (or seltit dedivid yb .emulov
,)selcitrap
rebmun ytisned fo n = NIV
selucelom (or
)selcitrap
I-9 2.0 ralucelom aC Number fo selucelom fo B -vid
noitartnecnoc fo B dedi yb eht emulov fo eht -xim
erut
l-8 1 I. cimulov mass, e ssaM dedivid yb emulov

mass ,ytisned

ytisned
l-8 2.1 mass noitartnecnoc Be ssaM fo B dedivid yb eht -iov
fo B emu fo eht erutxim
21-8 mass noitcarf fo B Bw oitaR fo eht mass fo B ot eht
mass fo eht erutxim
31-8 noitartnecnoc fo ,B ac tnuomA fo ecnatsbus fo B -vid nI yrtsimehc osla detacidni sa
ecnatsbus-fo-tnuoma dedi yb eht emulov fo eht -xinr CBI.
noitartnecnoc fo B erut
4
IS 1890 (Part 8) : 1995
IS0 31-8: 199i
stinU LACISYHP YRTSIMEHC AND MOLECULAR SCISYHP aeunitnoc(
International
Item
Name of unit symbol for Deflnitlon Conversion factors and remarks
No.
unit
a.7-8 eluoj rep elom J/mot For the various types of calorie, see
IS0 3141992, annex 8.
B-8.a eluoj rep elom lom(/J - K)
nivlek
a.9-3 eluoj rep elom lom(/J a K)
nivlek
l-3 0.a lacorpicer cibuc 3Mnr
,ertem
ertem ot eht
rewop sunim
eerht
3-l 1 .a margolik rep kg/m3

cibuc ertem

----------L------_
B-l 1 .b kilogram per litre kg/l, kg/L 1 kg/l = lo3 kg/m3 = 1 kg/dm3
The symbol L was adopted by the
CGPM (1979) as an alternative to I
rof eht .ertil
a.215 eno 1 eeS eht ,noitcudortni esualcbus
.2.3.0
a.31-B elom rep cibuc 3m/lom
ertem
--_-------_--- ----- ------
B-13.b mole per litre mol/l, 1 l/lom = 3OI mot/m3 = 1 mol/dm3
L/lom
5