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ENERGETICS - Coggle Diagram

- - - - q = m x c x ΔT
        q=heat (J)
        m= mass (g)
        c=specific heat capacity(4.18 Jg-1 K-1)
        ΔT = change in temperature (K)
      - STANDARD ENTHALPY CHANGE OF FORMATION
        -1 mol of substance formed from its element at 298K,1atm
        
        H2(g)+S(s)+2O2(g) --> H2SO4(l) ΔHf = -811 kJ mol-1
        
        ΔH Fomation = Product - Reactant
      - STANDARD ENTHALPY CHANGE OF COMBUSTION
        -I mol of substance completely burn in oxygen at 298 K,1 atm
        
        C2H4(g) + 2O2(g) --> 2CO2(g) + 2H2O(l) ΔH = -1411 kJ
        
        ΔH Combustion = Reactant - Product
      - STANDARD MOLAR ENTHALPY OF ATOMISATION
        -1 mol of separate gaseous atom is form from the element in standard state
        
        Na(s) --> Na(g)
      - STANDARD MOLAR ENTHALPY OF NEUTRALISATION
        -I mol of water is form in reaction between 1 mol dm-3 acid and 1 mol dm-3 alkali in standard state
        
        H+(aq) + OH-(aq) --> H2O(l)
      - STANDARD MOLAR ENTHALPY OF LATTICE
        -1 mol of crystallline solid ionic compound turn to separate gaseous ion
        
        NaCl (s) --> Na+(g) + Cl- (g)