05_wrap up and bomb calorimeter

# 05_wrap up and bomb calorimeter - H=-571.7 kJ B 2 H 6 (g) +...

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A 10.0 g sample of silver is heated to 100.0 °C and then added to 20.0 g of water at 23.0°C in an insulated calorimeter. At thermal equilibrium, the temperature of the system was measured as 25.0°C. What is the specific heat of silver? Recall that the specific heat of water is 4.184 J ･ g -1 °C –1 .

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Calculate the Standard Enthalpy of Formation of gaseous diborane (B 2 H 6 ) using the following equations: 4B (s) + 3 O 2 (g) 2B 2 O 3 (s) ΔH°=-2509.1 kJ 2H 2 (g) + O 2 (g) 2H 2 O(l)

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Unformatted text preview: H=-571.7 kJ B 2 H 6 (g) + 3O 2 (g) B 2 O 3 (s) H=-2147.5 kJ Calculate the Standard Enthalpy change for the oxidation of ammonia: 4NH 3 (g) + O 2 (g) 2N 2 H 4 (g) + 2H 2 O(l) For H 2 O(l) H f = -285.83kJ For H 2 O(g) H f = -241.82kJ For N 2 H 4 (g) H f = 95.40 kJ For NH 3 (g) H f = -46.19 kJ Bomb Calorimeter 4 used to measure E because it is a constant volume system H=E+PV q sys = -C cal T...
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## This note was uploaded on 11/08/2011 for the course CHM 2045 taught by Professor Geiger during the Fall '08 term at University of Central Florida.

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05_wrap up and bomb calorimeter - H=-571.7 kJ B 2 H 6 (g) +...

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