Two reactions are given below : `C_("(graphite)")+O_(2(g))rarrCO_(2(g)),DeltaH=-393.7kJ` `C_("(diamond)")rarrC_("(graphite)"),DeltaH=-2.1kJ` What quantity of diamond will give 800 kJ of heat on burning ?A. 24.25 gB. 15.24 gC. 2 gD. 12.12 g

Two reactions are given below : `C_("(graphite)")+O_(2(g))rarrCO_(2(g)

1.	Two reactions are given below : `C_("(graphite)")+O_(2(g))rarrCO_(2(g)),DeltaH=-393.7kJ` `C_("(diamond)")rarrC_("(graphite)"),DeltaH=-2.1kJ` What quantity of diamond will give 800 kJ of heat on burning ?A. 24.25 gB. 15.24 gC. 2 gD. 12.12 g
Answer» Correct Answer - A `C_("(diamond)")+O_(2(g))rarrCO_(2(g))` `=-393.7+(-2.1)=-"395.8 kJ"` `"800 kJ will b given by "(12)/(395.8)xx800=24.25g`

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Two reactions are given below : `C_("(graphite)")+O_(2(g))rarrCO_(2(g)),DeltaH=-393.7kJ` `C_("(diamond)")rarrC_("(graphite)"),DeltaH=-2.1kJ` What quantity of diamond will give 800 kJ of heat on burning ?A. 24.25 gB. 15.24 gC. 2 gD. 12.12 g

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