[" ate the mass of mercury which can be liberated from HgO at "25^(@)C" by the treatmen "],[1.84kJ" of heat at "],[" istant pressure "],[qquad Delta H_(f)^(@)(HgO,s)=-90.8kJmol^(-1)&" Atomic mass (Hg) "=200.6gmol^(-1)" ."]

Calculate the mass of mercury which can be liberated from HgO at 25^(@) C by the treatment of excess of HgO with 41.85 KJ of heat at (a) constant pressure and (b) constant volume conditions : Given DeltaH_(f)^(o) [HgO(s)] = –90.8 KJ/mole, M(Hg) = 200.6 gm/mole.

When 12.0g of carbon (graphite)reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 252 kJ of heat was released and no carbon remained. If Delta H_(f)^(0)(CO,g)= -110.5 kJ mol^(-1) and Delta H_(f)^(0)(CO_(2),g)= -393.5 kJ mol^(-1) ,calculate the mass of oxygen consumed.

When 12.0g of carbon (graphite)reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 252 kJ of heat was released and no carbon remained. If Delta H_(f)^(0)(CO,g)= -110.5 kJ mol^(-1) and Delta H_(f)^(0)(CO_(2),g)= -393.5 kJ mol^(-1) ,calculate the mass of oxygen consumed.

DeltaH_(f)^(@) for HgO is -21.7 kcal//mol at 25^(@)C . Calculate the mass of mercury which can be liberated by treatment of excess of HgO with 10.0 kcal. At. Wt. of Hg=200.6 .

Calculate the standard free energy change Delta G^(@) for the reaction, 2HgO(s) rarr 2Hg(l) + O_(2)(g) Delta H^(@) = 91 kJ mol^(-1) at 298 K, S_((HgO))^(@) = 72.0 JK^(-1) mol^(-1) .

When 1 g of anhydrous oxalic acid is burnt at 25^(@)C , the amount of heat liberated is 2.835 kJ . Delta H combustion is (oxalic acid : C_(2)H_(2)O_(4))

When 1 g of anhydrous oxalic acid is burnt at 25^(@)C , the amount of heat liberated is 2.835 kJ . Delta H combustion is (oxalic acid : C_(2)H_(2)O_(4))