Calcium chloride and sodium hydroxide react according to the equation: CaCl2(aq) + 2 NaOH(aq) → Ca(OH)2(s) + 2 NaCl(aq) a) What volume of 2.00 M NaOH would be needed to react with 50.0 mL of 1.50 M CaCl2? b) When 50.0 mL of 1.50 M CaCl2 solution and 80.0 mL of 2.00 M NaOH solution (i.e., 5.0 mL more than calculated in part (a)) both initially at 22.3℃ are mixed in a coffee-cup calorimeter with a calorimeter constant of 12.8 J/℃, the temperature fell to 20.0℃. If the density of the reaction mixture is 1.03 g/mL and its specific heat 3.94 J/g℃, calculate the heat absorbed by the reaction. c) Calculate △H (in kJ per mole of Ca(OH)2 formed) for the reaction
Calcium chloride and sodium hydroxide react according to the equation: CaCl2(aq) + 2 NaOH(aq) → Ca(OH)2(s) + 2 NaCl(aq) a) What volume of 2.00 M NaOH would be needed to react with 50.0 mL of 1.50 M CaCl2? b) When 50.0 mL of 1.50 M CaCl2 solution and 80.0 mL of 2.00 M NaOH solution (i.e., 5.0 mL more than calculated in part (a)) both initially at 22.3℃ are mixed in a coffee-cup calorimeter with a calorimeter constant of 12.8 J/℃, the temperature fell to 20.0℃. If the density of the reaction mixture is 1.03 g/mL and its specific heat 3.94 J/g℃, calculate the heat absorbed by the reaction. c) Calculate △H (in kJ per mole of Ca(OH)2 formed) for the reaction
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Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.146QP
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Calcium chloride and sodium hydroxide react according to the equation:
CaCl2(aq) + 2 NaOH(aq) → Ca(OH)2(s) + 2 NaCl(aq)
a) What volume of 2.00 M NaOH would be needed to react with 50.0 mL of 1.50 M CaCl2?
b) When 50.0 mL of 1.50 M CaCl2 solution and 80.0 mL of 2.00 M NaOH solution (i.e., 5.0 mL more than calculated in part (a)) both initially at 22.3℃ are mixed in a coffee-cup calorimeter with a calorimeter constant of 12.8 J/℃, the temperature fell to 20.0℃. If the density of the reaction mixture is 1.03 g/mL and its specific heat 3.94 J/g℃, calculate the heat absorbed by the reaction.
c) Calculate △H (in kJ per mole of Ca(OH)2 formed) for the reaction.
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