Presentation is loading. Please wait.

Presentation is loading. Please wait.

1. A 5.1 g piece of gold jewelry at a temperature of 100.0 o C is placed in a coffee cup calorimeter containing 16.9 g of water at 22.5 o C. The equilibrium.

Similar presentations


Presentation on theme: "1. A 5.1 g piece of gold jewelry at a temperature of 100.0 o C is placed in a coffee cup calorimeter containing 16.9 g of water at 22.5 o C. The equilibrium."— Presentation transcript:

1 1. A 5.1 g piece of gold jewelry at a temperature of o C is placed in a coffee cup calorimeter containing 16.9 g of water at 22.5 o C. The equilibrium temperature of the system is 23.2 o C. The calorimeter constant is known to be 1.54 J/ o C. What is the specific heat of the gold? For pure gold s = J/(g o C). Is the jewelry pure gold?

2

3

4

5 2. From the following enthalpies of reaction, 4 HCl (g) + O 2(g) 2 H 2 O (l) + 2 Cl 2(g) DH = kJ/mol ½ H 2(g) + ½ F 2(g) HF (l) DH = kJ/mol H 2(g) + ½ O 2(g) H 2 O (l) DH = kJ/mol Calculate DH o rxn for 2 HCl (g) + F 2(g) 2 HF (l) + Cl 2(g)

6


Download ppt "1. A 5.1 g piece of gold jewelry at a temperature of 100.0 o C is placed in a coffee cup calorimeter containing 16.9 g of water at 22.5 o C. The equilibrium."

Similar presentations


Ads by Google