Question

(a) Which of the ions Sr 2+, Rb . Cs will have the largest heat of hydration? Which the smallest? (b) of the two compounds CaF 2 and KF, which has the stronger intermolecular forces? (c) of the two compounds H 20 and CCl4, which has the stronger intermolecular forces?

Answer 1

nh And @ Heat of Hydration - the only - The amount of heat released when an in gefs affached with H20 inneente. and Heat of Hydration & Tome pihentian ans, ionie pofential & Z wherey Z-7. Cationic charge no. 82) radius of the eatin.. and ... Heart of Hijtrafin & Z u ... Now, Sat has highest change no. len Hence spat will have the largest heal... of hydration And Spb res [ Both have some charge no.) Hence heat of hydration of Rbt est i

nh And @ Heat of Hydration - the only - The amount of heat released when an in gefs affached with H20 inneente. and Heat of Hydration & Tome pihentian ans, ionie pofential & Z wherey Z-7. Cationic charge no. 82) radius of the eatin.. and ... Heart of Hijtrafin & Z u ... Now, Sat has highest change no. len Hence spat will have the largest heal... of hydration And Spb res [ Both have some charge no.) Hence heat of hydration of Rbt est i

Hence csit n will have smallest heap of hydration : Div ersen toiminta o Cafy cat + 27% KF Kt AF- Infernofeci fair force is the wean force acting in between two molecules. . And its directly depend on the change no.. of the constituention.. Therentear proches zion the hell And it follows the coulmib's low where, I intermolecular force to permitivity at where vacuum. de distance between two molecules .. Qara Q₂ = charge of the constituentions. Hence cafe has the stringer Interinspeanfarin . forces. © it H2O molecules are affaclied via. string H- bond HOLY . Per H2O molecule no. of tobonds=3

In case celo mifecules, they came attached Via weak to van der Waals force the Hence H2O has the stronger Infermo fewer forces. ① given isla 45:70g 45 70 g of Br 2 189 808 Img in Br. 20:286 mol of Brz Fromy formalfim.. Bu Bra Cs) - Br(e) Bricg] -7.2°C 5°C 4 bad 8°C 59-6-7.24) 1829 -590 .: 66.2* ē 23°C, 33912K 2 964 apow given . Molain beat corpacity of the branid. Phase 275:7 Jimo aiuto To increase 1 temp. to 1 ml Brz(4), reantel IfJamormit of heat, To increase 339.2 k teip to 0.28 nid Brico the amount of heat reanine 75. timot.in 7343-773 .3339.2 ***0*286 mol

given, molom. heaf carpacity of Brz; af gas phase. = 36 J. mol. Kt. - Hluce, To merease ty temp to 1 ml Brz (9) Tue amirink of heap reluire = 365 . To increase 2964 temp to 1.286 md Borz (9), the amoump of heat reauire : 36 go monta? x 2964 401286 ml . = 3047:6 J "Total heat require for. The transformation (7343.7 + 3047.6) J = 10395•3 Ju 10.YKI ,