A quantity of 2.00 ×102 mL of 0.521 M HCl is mixed with 2.00 ×102 mL of 0.261 M Ba(OH)2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.70°C. For the process   H+(aq) + OH−(aq) → H2O(l)   the heat of neutralization is −56.2 kJ/mol. What is the final temperature of the mixed solution?

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A quantity of 2.00 ×102 mL of 0.521 M HCl is mixed with 2.00 ×102 mL of 0.261 M Ba(OH)2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.70°C. For the process
 

H+(aq) + OH(aq) → H2O(l)
 
the heat of neutralization is −56.2 kJ/mol. What is the final temperature of the mixed solution?

 

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