To determine the new value of Kc at 50C, we need to know the relationship between the equilibrium constant and temperature. This relationship is given by the van't Hoff equation:ln K2/K1 = -H/R * 1/T2 - 1/T1 Where:- K1 and K2 are the equilibrium constants at temperatures T1 and T2, respectively- H is the standard enthalpy change of the reaction- R is the gas constant 8.314 J/molK - T1 and T2 are the initial and final temperatures in Kelvin, respectivelyHowever, we do not have enough information to use the van't Hoff equation, as the standard enthalpy change H is not provided. Therefore, we cannot determine the new value of Kc at 50C with the given information.