chem6c- ch.15 even answers

chem6c- ch.15 even answers - 15.2 (a)0;(b)0;(c) 3 ;(d) 2

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15.2 (a) 0; (b) 0; (c) 3 - ; (d) 2 - ; (e) +3; (f) +5; (g) +5; (h) +3 15.14 (a) (b) Yes. Each oxygen atom has two bonds to phosphorus atoms and two lone pairs. Each phosphorus atom has three bonds to oxygen atoms and one lone pair. (c) The phosphorus atoms can be replaced by CH fragments and the oxygen atoms by CH 2 groups. (d) The molecule would be C 10 H 16 . This compound is known as adamantane. 15.16 First we balance the equation: 5 2 3 4 PCl (g) 4 H O(l) 5 HCl(aq) H PO (aq) + → + 1 1 r 1 1 1 5( 131.23 kJ mol ) ( 1142.54 kJ mol ) [( 305.0 kJ mol ) 4( 237.13 kJ mol )] 545.17 kJ mol - - - - - ∆ ° = - + - - - + - = - G The reaction is spontaneous. 15.18 (a) 2 2 Na O(s) H O(l) 2 NaOH(aq) + → (b) 2 2 2 2 2 Na O (s) 2 H O(l) 2 NaOH(aq) H O (aq) + → + (c) 2 2 2 3 SO (g) H O(l) H SO (aq) + → (d) 2 5 500 C, V O 2 2 3 2 SO (g) O (g) 2 SO (g) ° + → P O O O P P P O O O C C C C C C C C C C H H H H H H H H H H H H H H H H
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15.20 (a) 2 2 FeS(s) 2 HCl(aq) FeCl (aq) H S(g) + → + (b) 2 8 2 8H (g) S (s) 8H S(g) + → (c) 3 FeCl 2 2 2 2 S Cl (l) Cl (g) 2 SCl (l) + → 15.22 Both water and hydrogen peroxide can form hydrogen bonds, which strongly influence physical properties. However, their respective oxygen atoms have different oxidation states, which leads to different chemical properties. 15.26
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This note was uploaded on 06/07/2009 for the course CHEM 6C taught by Professor Hoeger during the Spring '08 term at UCSD.

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chem6c- ch.15 even answers - 15.2 (a)0;(b)0;(c) 3 ;(d) 2

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