In a coffee-cup calorimeter, 140.0 mL of 1.4 M NAOH and 140.0 mL of 1.4 M HCİ are mixed. Both solutions were originally at 20.0°C. After the reaction, the final temperature is 29.4°C. Assuming that all the solutions have a density of 1.0 g/ cm and a specific heat capacity of 4.18 J/°C-g, calculate the enthalpy change for the neutralization of HCl by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter. AH = kJ/mol

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Chapter7: Chemical Energy
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Problem 109AE: A sample of nickel is heated to 99.8C and placed in a coffee-cup calorimeter containing 150.0 g...
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[References)
In a coffee-cup calorimeter, 140.0 mL of 1.4 M NaOH and 140.0 mL
of 1.4 M HCl are mixed. Both solutions were originally at 20.0°C.
After the reaction, the final temperature is 29.4°C. Assuming that all
the solutions have a density of 1.0 g/ cm and a specific heat capacity
of 4.18 J/°C g, calculate the enthalpy change for the neutralization of
HCI by NaOH. Assume that no heat is lost to the surroundings or to
the calorimeter.
AH
kJ/mol
Transcribed Image Text:[References) In a coffee-cup calorimeter, 140.0 mL of 1.4 M NaOH and 140.0 mL of 1.4 M HCl are mixed. Both solutions were originally at 20.0°C. After the reaction, the final temperature is 29.4°C. Assuming that all the solutions have a density of 1.0 g/ cm and a specific heat capacity of 4.18 J/°C g, calculate the enthalpy change for the neutralization of HCI by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter. AH kJ/mol
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