A 0.05 L sample of 0.2 M aqueous hydrochloric acid is added to 0.05 L of 0.2 M aqueous ammonia in a calorimeter. Heat capacity of entire calorimeter system is 480 J/K. The temperature increase is 1.09 K. Calculate `Delta_(r )H^(@)` in kJ/mol for the following reaction :
`HCl(aq.)+NH_(3)(aq.)rarrNH_(4)Cl(aq.)`

1.250 g of a sample of octane (C_(8)H_(18)) is burnt in excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rises from 298 K to 304.73 K. If heat capacity of calorimeter is 8.93 kJ/K. Calculate the heat transferred. Also calculate Delta U and Delta H of the reaction at 298 K. The reaction involved is C_(8)H_(18(l)) + (25)/(2)O_(2(g)) rarr 8CO_(2(g)) + 9H_(2)O_((l)) .

x g sample of NH_(4)NO_(3) is decomposed in a Bomb calorimeter. The temperature of calorimeter increase by 4^(@)C . The heat capacity of the system is 1.25 " kJ"//.^(@)C . Calculate the value of x. Given molar heat of decomposition of NH_(4)NO_(3) at constant volume is 400 kJ " mol"^(-1) .

x g sample of NH_(4)NO_(3) is decomposed in a Bomb calorimeter. The temperature of calorimeter increase by 4^(@)C . The heat capacity of the system is 1.25 " kJ"//.^(@)C . Calculate the value of x. Given molar heat of decomposition of NH_(4)NO_(3) at constant volume is 400 kJ " mol"^(-1) .

x g sample of NH_(4)NO_(3) is decomposed in a Bomb calorimeter. The temperature of calorimeter increase by 4^(@)C . The heat capacity of the system is 1.25 " kJ"//.^(@)C . Calculate the value of x. Given molar heat of decomposition of NH_(4)NO_(3) at constant volume is 400 kJ " mol"^(-1) .

25.0 mL of 1.0M HCl is combined with 35.0 mL of 0.5 M NaOH. The initial temperatures of the solutions is 25^@C , the density of the solution is 1.0 g/mL, the specific heat capacity of the solution is 4.184 J//g .^(@)C , the reaction is completed in insulated beaker, and the standard enthalpy of reaction for H^(+)(aq) + OH^(-)(aq) rarr H_(2)O (l) is -56 kJ//mol . What is the final temperature of the solution?

-100 cm^3 of 0.1 M HCl and 100 cm^2 of 0.1.M NaOH solutions are mixed in a calorimeter. If the heat liberated is "Q" K.Cal, the heat of neutralization (DeltaH) (in K.Cal) of HCl_((aq)) and NaOH_((aq)) is

A sample of 0.16 g CH_(4) was subjected to combustion at 27^(@)C in a bomb calorimeter. The temperature of the calorimeter system (including water) was found to rise by 0.5^(@)C . Calculate the heat of combustion of methane at (a) constant volume and (b) constant pressure. The thermal capacity of calorimeter system is 17.0 kJ K^(-1) and R = 8.314 J K^(-1) mol^(-1) .

A sample of 0.16 g CH_(4) was subjected to combustion at 27^(@)C in a bomb calorimeter. The temperature of the calorimeter system (including water) was found to rise by 0.5^(@)C . Calculate the heat of combustion of methane at (a) constant volume and (b) constant pressure. The thermal capacity of calorimeter system is 17.0 kJ K^(-1) and R = 8.314 J K^(-1) mol^(-1) .