TYPES OF CALORIMETRY PROBLEMS: I. Calculating the specific ...
TYPES OF CALORIMETRY PROBLEMS: I. Calculating the specific ...
TYPES OF CALORIMETRY PROBLEMS: I. Calculating the specific ...
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III. Using ∆H • rxn (or ∆H • /g of ∆H • /mol) to figure out calorimetry data.<br />
1. Use ∆H • rxn (or q rxn /g or q rxn /mole) to calculate q rxn .<br />
2. Plug q rxn into calorimeter expression and solve for whatever....T i , T f , ∆T, C cal<br />
q rxn = - [ q H2O + q cal ]<br />
q rxn = - [ (m . s . ∆T ) + (C cal . ∆T) ]<br />
Ex: 0.600 g of B 5 H 9 (s) was combusted in a calorimeter containing 1,000.0 g of H 2 O. Predict ∆T<br />
of water. Ccal = 1760 J/•C.<br />
2 B 5 H 9 (s) + 12 O 2 (g) ----> 5 B 2 O 3 (g) + 9 H 2 O (l) ∆Hrxn = -9080 kJ
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