CHEM 121 Quiz: REVIEW FOR EXAM CHAPTERS 4&5
28 Jan 2019
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Strong acids (ha) - hcl, hbr, hi, hno3, h2so4, hclo3, hclo4. Strong bases - metal hydroxide (metails in group 1a, 2a) Non metals - ph3, co2, ch4, ccl4. 2 nacl + pb(no3)2 2 nano3 + pbcl2 (s) Mg(oh)2 + hcl mgcl2 + h20 (l) Hx + moh mx + h20. So4 (2-) except ba 2+, pb 2+, hg 2+, sr 2+ Cl-, br-, i- except ag+, pb 2+, hg2 2+ Prediciting the products & identify the ppt. Mg + agno3 mg(no3)2 (aq) + ag (s) Assigning oxidation numbers to determine oxidizing & reducing agents. Elements in compounds: look at slide #75. One substance must lose e-, with another gaining e- Cuso4 + ki cui + i2 + k2so4. Oxidizing agent - opposite of what happened, what got reduced. E - internal energy (constant volume * heat) H - enthalpy (constant pressure * heat) Conversion factors for joules, calories, kj, kilocalories. 1 calorie = kcal = 1000 cal.
