Question

1. Predict the sign of ASº, if possible, for each of the following reactions. (a) 2503 (g) → 2802(g) + O2(g) (b) P4 (g) → P4 (s) (c) C2H5OH (1) + 302 (g) → 2C02(g) + 3H20 (1) (d) 2NaHCO3 (5) → Na2CO3 (s) + H2O(g) + CO2 (g) (e) CH3OH (1) + SOCI2 (1) + CH3CI (1) + SO2 (g) + HCl (g) (1) H20 (g) → H2O (1) (g) CH3COCH3 (1) + HCN (g) → CH3CHCNCH3 (1) + H20 (1) (h) 2NaHCO3 (s) → Na2CO3 (s) + H2O(g) + CO2 (g) 2. Calculate the solubility of Hg2Br2 in water. For Hg2Br2, Ksp = 1.3 x 10-22 Hg2Br2 + H2O = Hg22+ + 2Br - A. 1.7 x 10-7M B. 3.4 x 10-6 M C. 6.8 x 10-6 M D. 3.2 x 10-8 M E. 1.1 x 10M

Answer 1

L Predict the signs of is, if possible fox each of the following reactions do Entropy is measure of randomness. As randomness increses.y entropy also Lincreases The gaseas state is most disordered. If number of you molecule in product increase's entopy increases and sign of as is possitive If number of gas molecule in _produet decrecesos entropy decoeceses and sign of Aso is negative. aj 2503(g) 2 SO2cgj + O2(g) 3 Sign of Asº is possitive Весецуе питье moleculle in product increases. b] - Pacg) - Pucs) Sign of Aso is negative (-) _Because number of gas molecule in product decreases.

CJ CzH5OHCl3 + 302c9) -2002(g) + 3104) sign of AS is negative =) d] 2 NaHCO3.13) - Netz [03c39 theght Corcy Sign of asºc's | possitive (+) / e) CHE OH Cd) + SOC12(1) CH2Cl(ajtsoucg). ticlcg) I possitive (+) I sign of as is | f) H₂ Ocg H2O (L) I sign of AS is negative (-) g) CHz CO CH264) + HCNcy) CH2CHCN Chzei - + H2O(l) 3 Singen of asºis negative (-) h) 2 NaHCO3(s) - Sign of Asº is Na2CO3(s) + H2 O(g) + CO2ce) possitive (+) |

=) - 2] Calculate solubility of Hg, Brq in water Let solubility for Hg Born in water be x gram mole por litre - Hg Bottho ♡ Hg2+ + 2 Br Initial x - - - moles at - - X 2X mole i equilibrium Ksp for above regte equilibrium is Кsp сия) LB, 1- Кsp - х. (2х) - =X. 4X2 Ksp = 4X3 x= g kep = 85 1.3 x 102 X = 3. 2x108 M Solubility of Hig, Boz in water is D. 3.2 x 168 MI -2 Therefore,