Summary: 1
Supporting Information
Nitrate Ions and Ion Pairing at the Air-Aqueous Interface
Man Xu, Cheng Y. Tang, Aaron M. Jubb, Xiangke Chen, and Heather C. Allen*
Figure S1. Raman (a) and IR (b) intensities of the nitrate symmetric stretch peak as a function of
molarity. Molarity units (dividing by volume) allows comparisons of transition moment strengths at
different concentrations.
Table S1. Nitrate concentrations in units of m, x, and M.
Molality, m
(moles per kg of water)
Salt Mole Fraction,
x
Molarity, M
(moles per liter)
2.6 0.045 1.9
Mg(NO3)2
3.3 0.056 2.2
2.6 0.045 2.0
Ca(NO3)2
3.3 0.056 2.3

Source: Allen, Heather C.- Department of Chemistry, Ohio State University

Collections: Chemistry