No abstract

No abstract

Possible sources of error in measurements of th e reactions are disc ussed. A s umm ary of other en thalpy meas ure me nts of th e reaction in 0.1 N He l is giv en.Key word s : Enthalpy of reaction; heat of solution; so luti on calorim etry; stan dard refe re nce material; THAM ; TRIS ; tris(hydroxymethyl)amin omethan e; thermochemistry.

No abstract

T his paper disc usses in detai l th e de sign, co nstruction , and perfor mance of the va c uum jacketed , adiabatic so lution calorimeter whi c h was used for the work in th e ce rt ifica tion of two NBS Standard Refe re nce Mate rials for so lution calorimetry. As a test for the calurirnetri c precis ion th e fo llowin g ent hal pi es uf reaction we re meas ure d (refe rred to th e mass or moles of H 2S0 4 , 8 H 20 ) : Key words: Adiabatic so lution calorim eter; enthalpy of reactiun of H 2S0 4 in aqueous NaOH; H 2S0 4, e nth alpy of reaction in NaOH(aq); heat of reaction of H 2 S04 in aqueous NaOH; heat of solution of H2S04 in aqueo us NaOH; solution calorimetry; thermochem istry.