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?

25.0 mL of 1.0M HCl is combined with 35.0 mL of 0.5 M NaOH. The initia

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?
Answer» `27^@C` `28.9^@C` `30.1^@C` `32.8^@C` Solution :Heat Liberated due to neutralisation `=56 xx (0.5 xx 3.5 xx 10^(-3)) kJ = 0.98 kJ` [Meq. `H_2O` formed = `0.5 xx 35` ] `implies ""`Heat Liberated due to neutralisation = Heat gained by the system `implies 980 = (60 xx 1) xx 4.18 xx (T - 25) [ :' "TOTAL volume of solution" = 60 ml] implies T = 28.9^(@)C`.[ Total volume of solution = 60 ml]