+2 -0 = +4 in the dichromate volcano experiment, orange ammonium dichromate decomposes according to the...
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When ignited, solid ammonium dichromate decomposes in a fiery display. This is the reaction for a "volcano" demonstration. The decomposition produces nitrogen gas, water vapor, and chromium(III) oxide. The temperature is constant at 25°C. Substance AH? (kJ/mol) Sº (kJ/mol K) Cr2O3(g) -1147 0.08118 H2O(1) -242 0.1187 N2(g) 0.1915 (NH4)2Cr2O7(s) -22.5 0.1137 Determine ASuniy (in kJ/mol K). A) 7.66 B) 6.39 C) 84.3 D) 5.22 E) 6.03
Dalton's Law of Partial Pressures can be used to simplify gas stoichiometry problems. As a derivative of the ideal gas law, Dalton's Law assumes that gas particles are featureless little billiard balls, bouncing off each other and the walls of their container. Because of the assumption of ideality, 20 moles of helium, a mixture of 16 moles of nitrogen and 4 moles of oxygen, or a mixture of 10 moles of water vapor, 8 moles of carbon dioxide, and 2...
Mechanism An explanation for the mechanism is given in page 376 and 377. It says the reaction is not a free radical reaction, it is faster in acids and it requires HCIO and most likely Cl2 (elemental chlorine). Bleach is a basic solution of NaOCI sodium hypochlorite). It is made by the following reaction: 2 NaOH+ Cl2 <>NaoCI+NaCI + H20 Using your knowledge of equilibriums, what is the role of the acetic acid? (4 points) Hypochlorous acid is obtained from...