25Apr 2017

STUDY OF MOLAR REFRACTION AND POLARIZABILITY CONSTANT OF AQUEOUS SOLUTIONS OF KNO3 AND KBrO3 AT DIFFERENT TEMPERATURES.

  • P.G. and Research Department of Chemistry, S. S. G. M. College, Kopargaon (M. S.), India-423601.
  • P.G. Department of Chemistry, RNC Arts, JDB Commerce, NSC Science College ,Nasik Road, Nasik.
  • Abstract
  • Keywords
  • References
  • Cite This Article as
  • Corresponding Author

Densities and Refractive Indices of solutions of potassium bromate (KBrO3) have been studied in water and 0.1%, 0.2%, 0.3%, 0.4% and 0.5% (w/v) aqueous solution of KNO3 with temperature in the range T = 298.15˚K- 313.15˚K. The data obtained is utilized to determine Specific Refraction (RD) and Molar Refraction (RM) of solutions. The values of Refractive indices, Molar Refraction (RM) and Molar Polarizability (α) constant are found to be decreased with decreasing concentration of solute in solvent and these results are also interpreted in terms of interaction in salt solution. It has been verified that Molar Refraction is additive and constitutive property.


  1. Pacak P., Papers, 1989, 43 (4): 489-500.
  2. Idris S.O; Ibrahim, A.P; Iyun J.F and Mohammed, Y., Archives of Applied Science Research, 2010, 2 (5): 355-362.
  3. Usha Kushwaha, Amita Singh, Anil Kumar, A. K. Singh and Firoz Khan, ?A kinetic and mechanistic study of oxidation of tartaric acid by potassium bromate in perchloric acid medium catalysed by Ru (III)?, Journal of Chemical and Pharmaceutical Research, (2012), 4(6): 3144-3153.
  4. F. Mirjalili, M. A. Zolfigol, A. Bamoniri, Z. Zaghaghi, A. Hazar, ?Silica sulfuric acid/KBrO3/wet SiO2 as an efficient heterogeneous system for the oxidation of alcohols under mild conditions?, Acta Chim. Slov. (2003), 50: 563−568.
  5. Noyel Victoria, Pranav P. Sharma, Ian Ivar Suni, and S. Ramanathana, ?Potassium bromate as an oxidizing agent in a titania-based Ru cmp slurry?, Electrochemical and Solid-State Letters, (2010),13, (11): 385-387.
  6. Yi-Ho Young, Jiunn-Jye Chuu, Shing-Hwa Liu, and Shoei-Yn Lin-Shiau, ?Toxic effects of potassium bromate and thioglycolate onvestibuloocular reflex systems of guinea pigs and humans,Toxicology and Applied Pharmacology (2001), 177: 103?111.
  7. Penzkofer, H. Glas and J. Schmail, ?Optical dispersion and molar refractivities of alkali halide crystalals and aqueous solution,? Chemical Physics, (1982), 70: 47-54.
  8. Samuel H. Maron and Carl F. Prutton, ?Principle of Physical Chemistry?, 4th edition, Amerind publishing Co. Pvt. Ltd., (1972):
  9. M. B. M. Yunus and A. B. A. Rahman, ?Refractive index of solutions at highconcentration,? Applied Optics, (1998), 27(16): 3341.
  10. A. Lorentz, ?The theory of electons? Dover, New York, NY, USA, (1952).
  11. F. Fucaloro,?Reporting molar refraction?, Journal of Solution Chemistry, (2002), 31(7): 601- 605.
  12. D. Deosarkar, M. L. Narwade, H. G. Jahagirdar and K. M. Khedkar, ?The measurement of molar refraction and polarizability constants of some substituted sulphonic acids at 303 K? Oriental Journal of Chemistry, (2008),24(3): 1135-1137.
  13. Kumar, ?Estimates of internal pressure and molar refraction of imidazolium based ionic liquids as a function of temperature?, Journal of Solution Chemistry, (2008), 37, ?(2):203-214.
  14. Bhanupriya, R. P. Rajwade and R. Pande, ?Densities, Refractive indices and excess properties of N-p-tolylbenzohydroxamic acid in dimethyl sulfoxide at 288.15 to 15K?, Journal of Solution Chemistry, (2009), 38, (9):1173-1181.
  15. Fajans, K. and Luhdemann, R., Z. Chem. (1935), 29:150.
  16. Luhdemann,R., Z.Chem. (1935), 29:133.

[Arun B. Nikumbh and Meenakshi V. Rathi. (2017); STUDY OF MOLAR REFRACTION AND POLARIZABILITY CONSTANT OF AQUEOUS SOLUTIONS OF KNO3 AND KBrO3 AT DIFFERENT TEMPERATURES. Int. J. of Adv. Res. 5 (Apr). 749-756] (ISSN 2320-5407). www.journalijar.com


Meenakshi V. Rathi
P.G. Department of Chemistry, RNC Arts, JDB Commerce, NSC Science College ,Nasik Road, Nasik.; Affiliated to S. P. Pune University, Pune (India), 411007.

DOI:


Article DOI: 10.21474/IJAR01/3872      
DOI URL: https://dx.doi.org/10.21474/IJAR01/3872