Reaction between red phosphorus and liquid bromine is an exothermic reaction represented as follows`:` `2P (s) +3Br_(2)(l) rarr 2P Br_(3)(g),DeltaH^(@) = - 243kJ mol^(-1)` What will be the enthalpy change when 2.63g of phosphorus reacts according to the above reaction. Take atomic mass of phosphorus as 31.0 .

Reaction between red phosphorus and liquid bromine is an exothermic re

1.	Reaction between red phosphorus and liquid bromine is an exothermic reaction represented as follows`:` `2P (s) +3Br_(2)(l) rarr 2P Br_(3)(g),DeltaH^(@) = - 243kJ mol^(-1)` What will be the enthalpy change when 2.63g of phosphorus reacts according to the above reaction. Take atomic mass of phosphorus as 31.0 .
Answer» Correct Answer - `10.3kJ` Required `Delta H = ( 243 ) /( 62)xx 2.63 J = 10.3 kJ`

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