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Chemistry%20review%20homework

Chemistry%20review%20homework - 4 How many mLs of 18 M H 2...

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CIVIL 3230 Chemistry Review Homework For the following problems, equivalents and normality refer to acid/base reactions. Answers are given in bold. 1. For the underlined element in the following ions or molecules, calculate the oxidation state, the number of electrons in the valence shell of the reacted atom, and list the element that has the same electron configuration. Ion or molecule Oxidation State # e - in valence shell Element w/ same e - configuration H + +I 0 None (proton) C H 4 -IV 8 Ne N H 3 -III 8 Ne Na + +I 8 Ne Al 3+ +III 8 Ne H 2 S -II 8 Ar C O 2 +IV 2 He N O 3 - +V 2 He H 2 O -II 8 Ne Mg 2+ +II 8 Ne H 2 P O 4 - +V 8 Ne S O 4 2- +VI 8 Ne Cl - -I 8 Ar K + +I 8 Ar Ca 2+ +II 8 Ar H 4 Si O 4 +IV 8 Ne 2. How many mg/L of NaOH are required to make a 5 M solution? What is the normality of the solution? 2 x 10 5 mg/L and 5 N 3. How many mLs of 12 N HCl are required to make 100 mL of 4 M HCl? 33 mLs
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Unformatted text preview: 4. How many mLs of 18 M H 2 SO 4 are required to make 500 mLs of a 1 N solution? 14 mLs 5. If a nitrate (NO 3 ) and ammonia (NH 3 ) solution are labeled as 280 mg/L NO 3 –N and 280 mg/L NH 3 –N respectively, what is the corresponding concentration (mg/L) of NO 3 and NH 3 ? 1240 mg/L NO 3 and 340 mg/L NH 3 6. How much NaOH is required to completely neutralize 5 L of 0.1 M H 2 SO 4 ? How much NaOH is required to completely neutralize 5 L of 0.1 M HCl? 40 g NaOH and 20 g NaOH 7. How much NaOH is required to completely neutralize 5 L of 0.1 N H 2 SO 4 ? How much NaOH is required to completely neutralize 5 L of 0.1 N HCl? 20 g NaOH and 20 g NaOH 8. Text problems 2.2 (560 mg/L as CaCO 3 ), 2.3 (70.8 g O 2 ), 2.4 (6.81 x 10 4 kg/yr and 4.86 x 10 4 kg/yr), 2.8 (74.1 kg/d), and 2.11 (2520 mg/L as CaCO 3 )....
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