Enthalpies of formation of 2-methyl-2-ethoxypropane and 2-ethyl-2-ethoxypropane from equilibrium measurements

✍ Scribed by K.G. Sharonov; A.M. Rozhnov; A.V. Korol’kov; S.Y. Karaseva; E.A. Miroshnichenko; L.I. Korchatova

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 304 KB
• Volume: 27
• Category: Article
• ISSN: 0021-9614
• DOI: 10.1006/jcht.1995.0077

✦ Synopsis

The equilibria for the synthesis of C2H5OC(CH3)3 (A) and C2H5OC(CH3)2(C2H5) (B) from C2H5OH (C) and CH2:C(CH3)2 (D) or CH3CH:C(CH3)2 (E) in the liquid phase were investigated at temperatures from 313 K to 412 K. On the basis of experimental equilibrium constants found for n(C)/n(D) or n(C)/n(E)e4, the following values were obtained for DrH°m/(kJ•mol -1 ) and DrS°m/(J•K -1 •mol -1 ): (C+D=A), -( 35.4521.94) and -(82.3725.99); (C+A=B), -(34.1320.81) and -(87.8222.18). The following values of DfH°m(298.15 K)/(kJ•mol -1 ) have been derived: C2H5OC(CH3)3(l), -(350.822.6); C2H5OC(CH3)2(C2H5)(l), -(379.821.4).