HW 5 KEY - CHM 2046. HOMEWORK 5 x.fii_ __ KEY 1. Based on...

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Unformatted text preview: CHM 2046. HOMEWORK 5 x.fii_ __ KEY 1. Based on the considerations of molecular stucture, rank each of these sets in order of increasing pH: (assume 0.1 M aq solutions) Name SEC TA lowest pH —-—> highest pH (a) H2804, HZSeO4, HZSeO3 (b) CH3COOH, C 3COOH, CHZC COOH Cugooox, C/HlucooH ‘CbegcoQH 2. What is the pH of a solution that is 0.10 M HF and 0.05 M NaF? RMAmP+QIL F(F:/ F:-. ‘)K{k’= 9n.Z)‘(CV'H PH: 03% ‘ “8% (PH : 3"“! _ (’03 0.03 3. When 200. mL of 0.090 M NaOH and 100. mL of 0.300 M HAc are mixed: (a) What is the net ionic equation for the principal, large shift reaction that takes place essentially to completion? HAT, + W " .3» R794» pru- pH: I avg 1 (b) Whattprincipalhspfeciis (l[...] 2 0.01 M) exist, at what \ \ concentra ions, in t e ina s ution? (fig—“$9: :_ (manages “A _ ((00. “0.390) {mug/g i3 300. L (’3‘ 390. Cos/("J :OOGQN {ifch = . (00 N a: H.‘ Ross WW [Nan = 0,060”, [HAM = 0.9%»: [ Pm") = aoeow What type of solution is this? (Circle one) SA WA WB SB 5. (c) What are [H3O+] and the pH of the final solution? naval-2XLO (PH: GQKW- 003% :“L’JM-PQJQ =q~32 [H3o+] = lo 1 Xtoyy M pH= Recommended Text Problems: Chapter 18 92,93; Chapter 19 5—7,9—11, l6, 17, 20, 22-24, 26, 28, 30, 41, 45, 54-59 “NR” 4. Calculate [...] for each of these: -7 (a) water saturated with SrSO4 (KSp = 3.2 x 10 3’1 x ‘ _Z Sv 30%;) 6’ $v+z PSQo'L K963: Lg” JLSOY J I O O 2. .. V 7— C H: +y 7‘ " 5' zxto E x Y [SW] = Siexw' H [SO44] = STGMo’“H (b) 0.1 M Na2804 saturated with SrSO4 Z 0 SU 90»! (-3? §V+z kgo‘tv‘c 3,1)“0'7: x(0.(+ ) ‘5 e I ) O 9' l x : ERMO G C +x +— v C x 0, (+x ~6 [Na+] O‘ 2 ! Q , [304—2] = O~ ‘ M , [Sr+2] = (5 H (c) water saturated with Ni(OH)2 (K5p = 6. x 10‘15) . a N; (oral 3 mail + w w KW = [Maj (OH I O C; 6.x(o"9= szszlQXS 9 +x 1’ V X3 : I. S‘X(o"9 .— INi+21 = L we“ M [OH-1 =_L._xco'5H 5. Identify the Lewis acid(s) . Solve this by looking at the products for the new bondgsl that have been formed. Ca+2(aq) + 804‘2(aq) -—> CaSO4(s) Q Q I+Z Al(OH2)6+3 + H20 -—> Al(OH2)50H+2 + H3O+ H +- CaO(s) + H20(l) ——> Ca(OH)2(s) (Lg? 2‘ and Hf. NaCl(s) -HZQ—> Na+(aq) + Cl_(aq) and H20 W8 H ...
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HW 5 KEY - CHM 2046. HOMEWORK 5 x.fii_ __ KEY 1. Based on...

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