The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is___________________? August 23, 2021February 19, 2019 by admin The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is___________________? A. 0.5B. -0.5 C. 1 D. 1.5