Chapter 10 - Cationic covalent hydrides : This category...

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Chapter 10 Homework 10.7 Unlike halogens, hydrogen rarely forms a negative ion, nor is it highly reactive like the halogens. 10.10 a) WO 3 (s) + 3 H 2 (g) → W(s) + 3 H 2 O (g) b) H 2 (g) + Cl 2 (g) Æ 2 HCl(g) c) 2Al(s) + 6HCl(aq) Æ 2 AlCl 3 (aq) + 3 H 2 (g) 10.11 a) 2 KHCO 3 (s) Æ K 2 CO 3 (s) + H 2 O(g) + CO 2 (g) b) C 2 H 2 (g) + 2 H 2 (g) Æ H 3 C-CH 3 (g) c) PbO 2 (s) + 2 H 2 (g) → Pb(s) + 2 H 2 O(g) d) CaH 2 (s) + H 2 O(l) Æ Ca(OH) 2 (aq) + H 2 (g) 10.15 Nearly neutral covalent hydrides : these are low-polarity hydrides with low boiling points (except long chain hydrocarbons).
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Unformatted text preview: Cationic covalent hydrides : This category consists of ammonia, water, and hydrogen fluoride. In this case, the hydrogen bonding (protonic bridge) raises the melting and boiling points of the substances. Anionic covalent hydrides : The last case consists of electron deficient compounds where hydridic bridges form part of the molecular structure. 10.23 a) Yes, liquid b) No, gas c) Yes, liquid d) No, gas...
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