• 50.5 kJ of heat is released when 1 mole of HCl reacts with 1 mole of NaOH to p
ID: 104089 • Letter: #
Question
• 50.5 kJ of heat is released when 1 mole of HCl reacts with 1 mole of NaOH to produce 1 mole of NaCl and 1 mole of H2O. Write a thermochemical equation for this reaction. •The equation below shows that dissolving 1 mole of NaOH in water releases 40.05 kJ of heat (q). What if there was 2 moles of NaOH, how much heat would be released (q)? NaOH(s) Na+(aq)+OH-(aq)+40.05 kJ • From the equation above, calculate the amount of NaOH that needs to be dissolved (in moles) in order to release 1000 kJ of heat (q). • What should happen to the temperature of the solution produced from dissolving NaOH(s) in distilled water? • Write the following sentence as a chemical equation: “When 1 mole of HCl(aq) neutralizes 1 mole of NaOH(aq), 100.1 kJ is released”• 50.5 kJ of heat is released when 1 mole of HCl reacts with 1 mole of NaOH to produce 1 mole of NaCl and 1 mole of H2O. Write a thermochemical equation for this reaction. •The equation below shows that dissolving 1 mole of NaOH in water releases 40.05 kJ of heat (q). What if there was 2 moles of NaOH, how much heat would be released (q)? NaOH(s) Na+(aq)+OH-(aq)+40.05 kJ • From the equation above, calculate the amount of NaOH that needs to be dissolved (in moles) in order to release 1000 kJ of heat (q). • What should happen to the temperature of the solution produced from dissolving NaOH(s) in distilled water? • Write the following sentence as a chemical equation: “When 1 mole of HCl(aq) neutralizes 1 mole of NaOH(aq), 100.1 kJ is released”
• 50.5 kJ of heat is released when 1 mole of HCl reacts with 1 mole of NaOH to produce 1 mole of NaCl and 1 mole of H2O. Write a thermochemical equation for this reaction. •The equation below shows that dissolving 1 mole of NaOH in water releases 40.05 kJ of heat (q). What if there was 2 moles of NaOH, how much heat would be released (q)? NaOH(s) Na+(aq)+OH-(aq)+40.05 kJ • From the equation above, calculate the amount of NaOH that needs to be dissolved (in moles) in order to release 1000 kJ of heat (q). • What should happen to the temperature of the solution produced from dissolving NaOH(s) in distilled water? • Write the following sentence as a chemical equation: “When 1 mole of HCl(aq) neutralizes 1 mole of NaOH(aq), 100.1 kJ is released”
Explanation / Answer
Answer 1.
Molecular Reaction: NaOH(s) + HCl(aq) -------> NaCl(aq) + H2O(l), dH = - 50.5 kJ
Net ionic Reaction: NaOH(s) + H+(aq) ---------> Na+(aq) + H2O(l), dH = - 50.5 kJ
Answer 2. Usually enthalpy change double when the number of moles of reactants is doubled. Hence, 80.1 kJ heat will be release when 2 moles of NaOH is used.
Answer 3. Since, 40.05 kJ heat release when 1 mole of NaOH is used.
Than, 1000 kJ heat release when X mole of NaOH is used.
X = 1000 x 1/40.05
X = 25 mole of NaOH
Answer 4. The temperature of the solution will increase when NaOH is dissolved in distilled water to make the solution
Answer 5.
Chemical Equation: NaOH(s) + HCl(aq) -------> NaCl(aq) + H2O(l), dH = - 100.1 kJ
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.