Question

A) AS should be positive for I and positive for II. B) AS should be negative for I and positive for II. C) AS should be positive for I and negative for II. D) AS should be negative for I and negative for II. 13) 13) If Q increases, A) AG increases and the reaction becomes less spontaneous. B) AG decreases and the reaction becomes less spontaneous. C) AG increases and the reaction becomes more spontaneous D) AG decreases and the reaction becomes more spontaneous. 14) 14) Which one of the following has the lowest standard molar entropy, S, at 25°C? A) C2H6(s) B) C14H30(s) C) C18H38(1) D) C7H16(1) 15) 15) Based on the balanced chemical equation shown below, what volume of 0.250 M K2S2O3(aq), is needed to completely react with 24.88 mL of 0.125 M KI3(aq)? 2S2O32-(aq) + 13-(aq) -S4062- (aq) + 3 I-(aq) A) 12.4 mL B ) 6.22 mL C ) 99.5 mL D) 24.9 mL

Answer 1

Chy) 13 Dessut RI In the so. Pof us * incredes. than Au will also increses, theen, reaction became eless shortenecues, option, A is correct. 14) Solid hace lees enotsofy compare to liquid and, also smaller malecule i Less entropy compare to bulky / big molculu so CaHg(s) has lowest Entsopy. Aus = A 2 5,032-299) + 13 (aq) → 546+2017+38(09) applied POAC Rule = moles of 5₂ 0² e males of I3 Cofficient officient. males = molarity x Volume in L) 0. 25 MX U. 24.88ml *00125 JOUJOUTUU 2 V= 24.9 ml k₂5205 Thank gay &