2. Calculate the amount of heat required to raise the temperature of 950.0 mL of a solution from 22.5 °C to 38.0 °C if the solution has a density of 1.04 g mLl and a heat capacity of 4.08 J K-l g-l.
2. Calculate the amount of heat required to raise the temperature of 950.0 mL of a solution from 22.5 °C to 38.0 °C if the solution has a density of 1.04 g mLl and a heat capacity of 4.08 J K-l g-l.
General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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Transcribed Image Text:2. Calculate the amount of heat required to raise the temperature of 950.0 mL of a solution from 22.5 °C to 38.0 °C if the
solution has a density of 1.04 g mL-l and a heat capacity of 4.08 J K-l g.
3. This reaction: CH4(g) + 202(g) → CO2(g) + 2H2O(1) produces 56.0 kJ of heat when 1.00 g of methane is burned. What
is the molar heat of combustion for CH4?
4. In thermodynamics heat is represented by the letter 'q' and q is negative for processes which lose heat to the surroundings
(i.e. exothermic processes). What is q for burning one mole of methane?
5. What mass of methane would need to be burned in order to generate the heat required to raise the temperature of the
solution in question 2? (Hint: look at question 3 for some relevant data)
6. In this lab class you will measure the enthalpy change for hydrochloric acid reacting with sodium hydroxide. What effect,
if any, would using nitric acid instead of hydrochloric acid have on the enthalpy changes measured in this experiment?
Why? (Hint: what is the actual reaction you are measuring the enthalpy change for?)
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