Volume change of ion pair formation: Rubidium nitrate and thallium(I) nitrate in water

William L. Masterton, Harry Welles, Jonathan H. Knox, Frank J Millero

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Density data for dilute aqueous solutions of RbNO3 and TlNO3 at 25°C lead to the following equations for the apparent molal volumes: RbNO3: ΦV = 43.07 + 2.46 c1/2 + 0.15 c (0-0.41 M) TINO3: ΦV = 39.50 + 10.83 c1/2 - 25.46 c + 26.0 c3/2 (0.03-0.25 M) From these expressions and a semiempirical equation for Φv of a completely dissociated 1:1 electrolyte, values of ΔΦv for ion pair formation at c=0.10 are calculated to be+5 ml-mole-1 for RbNO3 and+12 ml-mole-1 for TlNO3. Comparison of ΔΦv with the electrostriction volume effect suggests that virtually all of the electrostriction is removed in the formation of the TlNO3 ion pair but only about half with RbNO3. Values of ΔΦv are in poor agreement with those estimated from electrostatic theories of ion pair formation.

Original languageEnglish (US)
Pages (from-to)91-102
Number of pages12
JournalJournal of Solution Chemistry
Volume3
Issue number2
DOIs
StatePublished - Feb 1974

Fingerprint

Rubidium
thallium
rubidium
Electrostriction
Nitrates
nitrates
electrostriction
Ions
Water
semiempirical equations
water
ions
Static Electricity
Electrolytes
Electrostatics
electrolytes
electrostatics
aqueous solutions
thallium nitrate

Keywords

  • apparent molal volume
  • density
  • electrolyte solution
  • electrostriction
  • Ion pair
  • magnetic float
  • rubidium nitrate
  • thallium(I) nitrate

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Volume change of ion pair formation : Rubidium nitrate and thallium(I) nitrate in water. / Masterton, William L.; Welles, Harry; Knox, Jonathan H.; Millero, Frank J.

In: Journal of Solution Chemistry, Vol. 3, No. 2, 02.1974, p. 91-102.

Research output: Contribution to journalArticle

Masterton, William L. ; Welles, Harry ; Knox, Jonathan H. ; Millero, Frank J. / Volume change of ion pair formation : Rubidium nitrate and thallium(I) nitrate in water. In: Journal of Solution Chemistry. 1974 ; Vol. 3, No. 2. pp. 91-102.
@article{577d901815ae4beab7558f46a6049233,
title = "Volume change of ion pair formation: Rubidium nitrate and thallium(I) nitrate in water",
abstract = "Density data for dilute aqueous solutions of RbNO3 and TlNO3 at 25°C lead to the following equations for the apparent molal volumes: RbNO3: ΦV = 43.07 + 2.46 c1/2 + 0.15 c (0-0.41 M) TINO3: ΦV = 39.50 + 10.83 c1/2 - 25.46 c + 26.0 c3/2 (0.03-0.25 M) From these expressions and a semiempirical equation for Φv of a completely dissociated 1:1 electrolyte, values of ΔΦv for ion pair formation at c=0.10 are calculated to be+5 ml-mole-1 for RbNO3 and+12 ml-mole-1 for TlNO3. Comparison of ΔΦv with the electrostriction volume effect suggests that virtually all of the electrostriction is removed in the formation of the TlNO3 ion pair but only about half with RbNO3. Values of ΔΦv are in poor agreement with those estimated from electrostatic theories of ion pair formation.",
keywords = "apparent molal volume, density, electrolyte solution, electrostriction, Ion pair, magnetic float, rubidium nitrate, thallium(I) nitrate",
author = "Masterton, {William L.} and Harry Welles and Knox, {Jonathan H.} and Millero, {Frank J}",
year = "1974",
month = "2",
doi = "10.1007/BF00646879",
language = "English (US)",
volume = "3",
pages = "91--102",
journal = "Journal of Solution Chemistry",
issn = "0095-9782",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Volume change of ion pair formation

T2 - Rubidium nitrate and thallium(I) nitrate in water

AU - Masterton, William L.

AU - Welles, Harry

AU - Knox, Jonathan H.

AU - Millero, Frank J

PY - 1974/2

Y1 - 1974/2

N2 - Density data for dilute aqueous solutions of RbNO3 and TlNO3 at 25°C lead to the following equations for the apparent molal volumes: RbNO3: ΦV = 43.07 + 2.46 c1/2 + 0.15 c (0-0.41 M) TINO3: ΦV = 39.50 + 10.83 c1/2 - 25.46 c + 26.0 c3/2 (0.03-0.25 M) From these expressions and a semiempirical equation for Φv of a completely dissociated 1:1 electrolyte, values of ΔΦv for ion pair formation at c=0.10 are calculated to be+5 ml-mole-1 for RbNO3 and+12 ml-mole-1 for TlNO3. Comparison of ΔΦv with the electrostriction volume effect suggests that virtually all of the electrostriction is removed in the formation of the TlNO3 ion pair but only about half with RbNO3. Values of ΔΦv are in poor agreement with those estimated from electrostatic theories of ion pair formation.

AB - Density data for dilute aqueous solutions of RbNO3 and TlNO3 at 25°C lead to the following equations for the apparent molal volumes: RbNO3: ΦV = 43.07 + 2.46 c1/2 + 0.15 c (0-0.41 M) TINO3: ΦV = 39.50 + 10.83 c1/2 - 25.46 c + 26.0 c3/2 (0.03-0.25 M) From these expressions and a semiempirical equation for Φv of a completely dissociated 1:1 electrolyte, values of ΔΦv for ion pair formation at c=0.10 are calculated to be+5 ml-mole-1 for RbNO3 and+12 ml-mole-1 for TlNO3. Comparison of ΔΦv with the electrostriction volume effect suggests that virtually all of the electrostriction is removed in the formation of the TlNO3 ion pair but only about half with RbNO3. Values of ΔΦv are in poor agreement with those estimated from electrostatic theories of ion pair formation.

KW - apparent molal volume

KW - density

KW - electrolyte solution

KW - electrostriction

KW - Ion pair

KW - magnetic float

KW - rubidium nitrate

KW - thallium(I) nitrate

UR - http://www.scopus.com/inward/record.url?scp=0009101438&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0009101438&partnerID=8YFLogxK

U2 - 10.1007/BF00646879

DO - 10.1007/BF00646879

M3 - Article

AN - SCOPUS:0009101438

VL - 3

SP - 91

EP - 102

JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

SN - 0095-9782

IS - 2

ER -