Question

4. ( point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g) +O(g) AH +252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure. b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams of methane gas are produced? 6. (2 points) Calculate the AH (in kJ) for the following reaction: 2Cuo(s)+NO(g) à Cu,0(s) + NO,(g). Use Appendix C in the 14 edition of the textbook (pg. 1088) or something similar. If you do not use the 14th edition, you MUST site your source, so I can look up your values if they are different from the book 3. (2 points) For the ONE reaction below that will take place, predict the products (with physical states) for each set of reactants. If no reaction occurs write N.R. If a reaction would occur then ensure that the chemical equation is balanced. Use the activity series in your book (Table 4.5, pg. 142) or online to help you Pb (s) _Pt(NO)2 (aq) à а. Pt (s) _Pb(NO,)2 (aq) à b. 4. (1 point) For the problem above that does produce products: a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? E (...:. - C-...: J... 1. L-11-.... ... 3. (2 points) For the ONE reaction below that will take place, predict the products (with physical states) for each set of reactants. If no reaction occurs write N.R. If a reaction would occur then ensure that the chemical equation is balanced. Use the activity series in your book (Table 4.5, pg. 142) or online to help you. _Pt(NO), (aq) à Pb (s)+ a. b. _Pt (s)+ _Pb(NO) (aq) à 4. (1 point) For the problem above that does produce products a. What is oxidized in the reaction? b. What is the oxidizing agent in the reaction? 5. (3 points) Consider the following reaction: 2CH,OH(g) à 2CH,(g)+0,(g) AH=+252.8 kJ a) Calculate the amount of heat transferred when 24.0 g of CH,OH(g) is decomposed by this reaction at constant pressure b) For a given sample of CH,OH, the enthalpy change during the reaction is 82.1 kJ. How many grams of methane gas are produced?

Answer 1

Pt CA) Pb(A) + PbCNo) (aqu Pt Reachion wi tatflace Pb beeaue xeachue Ph Mbre Condin RLate Pt PECA) N.R Pb(No2),Caq No Reacion beccuc mode seauhue thon Pt wil not be dinflaced by Pt Reducrion +2 PbCA) PECN03), +2 Pb CNo)Pt CA Cay oridined Oridasiun A6ar ol Pb in nereaea trom oto t2 P b oxidined 40 Oxidinin agentReduce iheu O ridanon Atateof PECNO), in deducea Redeuiny gent 2CH20 Mtg)-2ChaCg) Oh-+958t52-8k duiomponed heat chome whn 2 mol 24 moles o con h 29grn 2+ NO (12+16+4) 2001→ 2n-2kヶ heas foom Brom -94.0 丁 228 x04r

82.1 kA 252 oh tor Lmal 26 4KT Mol uhn P18 ニHO 126 -1539 mol 82.1 4- (t.539Jy Moleular weigN Now veig CH wこ24633チ