2. When 25.0 mL of 0.25 mol/L LiOH and 25.0 mL of 0.25 mol/L HCI are mixed together, the temperature warms 15.8°C. What is the molar enthalpy of neutralization for LiOH? 3. Instant hot packs work by crystallizing sodium acetate (NaCH3COO). The molar enthalpy of crystallization for sodium acetate is -56.7 kJ/mol. How many grams of sodium acetate are needed to warm 125.0 mL of water from 21.0°C to 35.4°C? 4. If 3.65g of butane is burned underneath a cup holding 1.00 L of water at 21.0°C, what will the final temperature of the water be (AH =-3325 kJ/mol)? comb

2. When 25.0 mL of 0.25 mol/L LiOH and 25.0 mL of 0.25 mol/L HCI are mixed together, the temperature warms 15.8°C. What is the molar enthalpy of neutralization for LiOH? 3. Instant hot packs work by crystallizing sodium acetate (NaCH3COO). The molar enthalpy of crystallization for sodium acetate is -56.7 kJ/mol. How many grams of sodium acetate are needed to warm 125.0 mL of water from 21.0°C to 35.4°C? 4. If 3.65g of butane is burned underneath a cup holding 1.00 L of water at 21.0°C, what will the final temperature of the water be (AH =-3325 kJ/mol)? comb

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

Section20.7: Green Chemistry And Sustainability

Problem 2.1ACP: Assume that a sample of hard water contains 50. mg/L of Mg2+ and 150 mg/L of Ca2+, with HCO3 as the...

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