Heat of reaction is defined as the amount of heat absorbed or evolved at a given temperaturewhen the reactants have combined to form the products is represented by a balanced chemcial equation. If the heat is denofed by q then the numerical value of q depends on the manner in which the reaction is performed for the two methods of conducting chemical reactions in calorimeters.
Constant volume W = 0 and `q_(v) = Delta E` Bomb calorimeter
Constant pressure W = - V `Delta`P, therefore `q_(P) = Delta E + P Delta V rar (V. Delta P)`
The heat of combustion of maltose at constant volume in the above question if water vapour are not condensed

Heat of reaction is defined as the amount of heat absorbed or evolved at a given temperaturewhen the reactants have combined to form the products is represented by a balanced chemcial equation. If the heat is denofed by q then the numerical value of q depends on the manner in which the reaction is performed for the two methods of conducting chemical reactions in calorimeters. Constant volume W = 0 and q_(v) = Delta E Bomb calorimeter Constant pressure W = - V Delta P, therefore q_(P) = Delta E + P Delta V rar (V. Delta P) The heat capacity of a bomb calorimeter is 300 JK When 0.16 gm of methane was burnt in this calorimeter the temperature rose by 3^(@) C. The value of Delta U per mole will be a. 100 KJ b. 90 KJ c. 900 KJ d. 48KJ

Heat of reaction is defined as the amount of heat absorbed or evolved at a given temperaturewhen the reactants have combined to form the products is represented by a balanced chemcial equation. If the heat is denofed by q then the numerical value of q depends on the manner in which the reaction is performed for the two methods of conducting chemical reactions in calorimeters. Constant volume W = 0 and q_(v) = Delta E Bomb calorimeter Constant pressure W = - V Delta P, therefore q_(P) = Delta E + P Delta V rar (V. Delta P) The heat capacity of a bomb calorimeter is 300 JK When 0.16 gm of methane was burnt in this calorimeter the temperature rose by 3^(@) C. The value of Delta U per mole will be

Heat of reaction is defined as the amount of heat absorbed or evolved at a given temperaturewhen the reactants have combined to form the products is represented by a balanced chemcial equation. If the heat is denofed by q then the numerical value of q depends on the manner in which the reaction is performed for the two methods of conducting chemical reactions in calorimeters. Constant volume W = 0 and q_(v) = Delta E Bomb calorimeter Constant pressure W = - V Delta P, therefore q_(P) = Delta E + P Delta V rar (V. Delta P) When maltose C_(12)H_(22)O_(11)(s) burns in a calorimetric bomb at 298 K yielding carbon dioxide and water, the heat of combustion is -1350 kcal/mol, the heat of combustion of maltose at constant pressure will be

Heat of reaction is defined as the amount of heat absorbed or evolved at a given temperaturewhen the reactants have combined to form the products is represented by a balanced chemcial equation. If the heat is denofed by q then the numerical value of q depends on the manner in which the reaction is performed for the two methods of conducting chemical reactions in calorimeters. Constant volume W = 0 and q_(v) = Delta E Bomb calorimeter Constant pressure W = - V Delta P, therefore q_(P) = Delta E + P Delta V rar (V. Delta P) When maltose C_(12)H_(22)O_(11)(s) burns in a calorimetric bomb at 298 K yielding carbon dioxide and water, the heat of combustion is -1350 kcal/mol, the heat of combustion of maltose at constant pressure will be

Why is heat evolved or absorbed in a chemical reaction ?

The total amount of heat evolved or absorbed in a reaction depends upon the number of steps in which the reaction takes place.

The total amount of heat evolved or absorbed in a reaction depends upon the number of steps in which the reaction takes place.

The heat absorbed in a reaction at constant temperature and constant volume is

The heat absorbed in a reaction at constant temperature and constant volume is