We have investigated the structure of sodium poly(styrenesulfonate) in a bulk solution and when confined within the pores of the model nanoporous medium, Vycor. We have used the zero average contrast condition and SANS to separate the intramolecular (form factor), P(q), and intermolecular contributions, Q(q), to the total scattering. We find that the chains are more stretched in confined geometry than the bulk and sufficiently so as to highlight the large-scale disordered structure of Vycor. We show experimentally and prove theoretically that the asymptotic behavior of the observed interchain structure factor, Q(q), is approximate to 1/q(2) for free and approximate to 1/q for confined chains.