101008

# 101008 - reacts, raising the temperature of the solution...

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Specific Heat and Molar Heat Capacity y Specific Heat- (s) heat required to raise the temperature of one grm of a substance by one degree Celsius. y Molar Heat Capacity- (C or c) heat required to raise the temperature of one mole of a substance by one degree Celsius.

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Heat Calculated from Heat Capacity
Calorimetry y At constant P (open container)

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Calorimetry
Calorimetry y 50.0 mL of 1.0 M NaOH and 50.0 mL of 1.0 M HCl were mixed at 25.0 o C in a calorimeter. The final temperature after the reaction was 31.9 o C. What amount of energy is released? The specific heat of water is 4.18 J/ o C*g.

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Calorimetry y Zinc metal reacts with hydrochloric acid to form zinc chloride and hydrogen gas. When 0.103 g of Zn is combined with enough HCl to make 50.0 mL of solution in a coffee-cup calorimeter, all the zinc

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Unformatted text preview: reacts, raising the temperature of the solution from 22.5 o C to 23.7 o C. Find H for this reaction. Calorimetry y A 275 mL sample of water at 55.2 o C is in a coffee cup calorimeter. What are the final temperatures when each of the following things at 25 o C are added to the hot water. s H2O = 4.18 J/ o C*g { A steel ball, 2.20 cm in diameter. d = 7.83 g/ mL, s = 0.45 J/ o C*g Calorimetry { A tightly wound roll of aluminum foil, 2.00 m long, 5.0 cm wide and 0.10 mm thick. d = 2.70 g/cm 3 , s = 0.902 J/ o C*g A 5 mL sample of water 5 . 2 o C 4 7 25.0 oC 40.1 oC 4% 5% 2% 89% 1. 55.2 o C 2. 54.7 o C 3. 25.0 o C 4. 40.1 o C...
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## 101008 - reacts, raising the temperature of the solution...

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