[CHM113] 113DQ6

[CHM113] 113DQ6 - Discussion Quiz #6AA/AB (10 pts) CHM 101...

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Discussion Quiz #6AA/AB (10 pts) Name: ______________________________ CHM 101 Prof. R. Briggs Section: ______ T.A.__________________ ASU Spring 2008 Date: ______________________________ 1. Predict whether the following processes are exothermic or endothermic and give the sign of Δ H : (2 points) 2 (g) 2 O(g) 2. The formation of the following reaction is achieved through a series of reactions. Use Hess’s Law to determine the formation of the overall reaction . (4 points) Overall Reaction: PCl 3 (g) +Cl 2 5 (g) Reaction 1: P(s) + 3 / 2 Cl 2 3 (g) f = -320 kJ/mol Reaction 2: P(s) + 5 / 2 Cl 2 5 (g) f = -440 kJ/mol 3. Determine the energy of a photon at a wavelength of 415nm. (3 points) 4. Name one color to be used in the investigation? (1 point)
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Discussion Quiz #6AA/AB (10 pts) Name: _____ KEY _____________________ CHM 101 Prof. R. Briggs Section: ______ T.A.__________________ ASU Spring 2008 Date: ______________________________ 1. Predict whether the following processes are exothermic or endothermic and give the sign of Δ H : (2 points) (1/2 point for each) 2 (g) exothermic, - H 2 O(g) exothermic, - H 2. The formation of the following reaction is achieved through a series of reactions. Use Hess’s Law to determine the formation of the overall reaction. (4 points) (1 point for line and 1 point for the right H) Overall Reaction: PCl 3 (g) +Cl 2 5 (g) Reaction 1: P(s) + 3 / 2 Cl 2 3 (g) f = -320 kJ/mol Reaction 2: P(s) + 5 / 2 Cl 2 5 (g) f = -440 kJ/mol PCl 3 (g) & P(s) + 3 / 2 Cl 2 (g) f = 320 kJ/mol P(s) + 5 / 2 Cl 2 5 (g) f = -440 kJ/mol PCl 3 (g) +Cl 2 5 (g) H = 320 + (-440) = -120 kJ/mol 3. Determine the energy of a photon at a wavelength of 415nm. (3 points) E = hc/ λ = ((6.626 x 10 -34 J*s)(3.0 x 10 8 m/s))/((415nm)(1m/10 -9 nm)) = 4.79 x 10 -19 J (1 point for choosing the right equation, 1 point for setting it up properly and 1 point for the right answer) 4. Name one color to be used in the investigation? (1 point) Red, blue or green
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Discussion Quiz #6AC/AD (10 pts) Name: ______________________________ CHM 101 Prof. R. Briggs Section: ______ T.A.__________________ ASU Spring 2008 Date: ______________________________ 1. Predict whether the following processes are exothermic or endothermic and give the sign of Δ H : (2 points) 2 (g) 2 (g) 2. The formation of the following reaction is achieved through a series of reactions. Use Hess’s Law to determine the formation of the overall reaction . (4 points) Overall Reaction: PCl 3 (g) +Cl 2 5 (g) Reaction 1: P(s) + 3 / 2 Cl 2 3 (g) f = -320 kJ/mol Reaction 2: P(s) + 5 / 2 Cl 2 5 (g) f = -440 kJ/mol 3. When potassium permanganate, KMnO 4 , is reacted with concentrated sulfuric acid, H 2 SO 4 , it
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This note was uploaded on 08/12/2008 for the course CHM 113 taught by Professor Anbar during the Spring '06 term at ASU.

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[CHM113] 113DQ6 - Discussion Quiz #6AA/AB (10 pts) CHM 101...

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