$150\,\,c{m^3}\,of\,\,0.2\,M\,KOH\,\, = \,\,\frac{{0.2\,\, \times \,\,150}}{{1000}}\,\, = \,\,0.03\,\,\,mole\,\,KOH$
$0.02\,\,mole\,\,{H_2}S{O_4}\,\, = \,\,2\,\, \times \,\,0.02\,\,mole\,\,{H^ + }\, = \,\,0.04\,\,mole\,\,{H^ + }\,$ અને $\,0.3\,mole\,\,KOH\,\, \equiv \,\,0.03\,mole\,\,O{H^ - }$
$0.03\,v$ મોલ $OH^-$ આયન $0.03\,v$ મોલ $H^+$ આયન સાથે પ્રક્રિયા કરી $0.03$ મોલ $H_2O$ બનાવે છે
$=57.1 × 0.03 = 1.7\, KJ$
${H_2}O(g) + C(s) \to CO(g) + {H_2}(g);\,\Delta H = 131\,kJ$$CO(g) + \frac{1}{2}{O_2}(g) \to C{O_2}(g);\Delta H = - 282\,kJ$
${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(g);\,\Delta H = - 242\,kJ$
$C(s) + {O_2}(g) \to C{O_2}(g);\,\Delta H = X\,kJ$
$X$ નું મૂલ્ય ......$kJ$