For the reaction , FeCO_(3(s)) rarr FeO_((s)) + CO_(2(g)), Delta H= 82.8kJ " at " 25^(@)C , what is (Delta E or Delta U) " at " 25^(@)C ?
The value of K_(c) for the reaction 3O_(2)(g)hArr2O_(3)(g) is 2.0xx10^(-50) at 25^(@)C . If the equilibrium concentration of O_(2) in air at 25^(@)C is 1.6xx10^(-2) , what is the concentration of O_(3) ?
For the reaction, 2Cl(g)toCl_(2)(g), what are the signs of DeltaH and DeltaS ?
Chemical reactions are invariably associated with the transfer of energy either in the form of hear or light. In the laboratory, heat changes in physical and chemical processes are measured with an instrument called calorimeter. Heat change in the process is calculated as: q= ms Delta T , s= Specific heat = c Delta T = Heat capacity. Heat of reaction at constant pressure is measured using simple or water calorimeter. Q_(v)= Delta U = Internal energy change, Q_(P) = DeltaH, Q_(P) = Q_(V) + P Delta V and DeltaH = Delta U+ Delta nRT . The amount of energy released during a chemical change depends on the physical state of reactants and products, the condition of pressure, temperature and volume at which the reaction is carried out. The variation of heat of reaction with temperature and pressure is given by Kirchoff's equation: (DeltaH_(2) - DeltaH_(1))/(T_(2)-T_(1))= Delta C_(P) (At constant pressure), (DeltaU_(2) - DeltaU_(1))/(T_(2)-T_(1)) = DeltaC_(V) (At constant volume) The enthalpy change (DeltaH) for the reaction N_(2) (g) + 3H_(2)(g) rarr 2NH_(3)(g) is -92.38kJ at 298 K. The internal energy change DeltaU at 298 K is
The following are some state ments regarding dissociation of lime stone according to the equation CaCO_(3(s)) hArr CaO_((s)) + CO_(2(g)) : Delta H = 110 kJ. The reaction is carried in a closed vessel. A) The pressure of CO_(2) increases when temperature is inereased. B) The pressure of CO_(2) inereases when temperature is deereased C) The pressure of CO_(2) increases when amount of CaCO_(3) is decreased. The incorrect statements are .
For the reaction at 300 K A_((g)) harr V_((g)) + S_((g) . Delta_(t) H^(@) = - 30 "KJ/mol" Delta_(t)S^(@) = - 0.1 K.J. K^(-1)."mole"^(-1) What Is the value of equilibrium constant ?
For the reaction, Ag_(2)O_((s)) hArr 2Ag_((s)) + (1)/(2) O_(2(g)) Delta H, Delta S and T are 40.63 kJ mol^(-1), 108.8 JK^(-1) mol^(-1) and 373K respectively. Free energy change Delta G of the reaction will be _____
NARENDRA AWASTHI-THERMODYNAMICS-Level 3 - Match The Column
