Question

DEBB 160 7- Solvation for sat in water needs energy to separate the lons in sall lattice. With the aid ofa diagram explain why the polarity of water Is ugalul for solvation process of this ealt Based on this concept, explain why the hydralion ahell of sodlum is farger than potasslum. Pelarutan garam di dalam air memerkukan tonage untuk memisahkan lon dani koklal garam. Dengan banluan gambarajah yang aesuel terangkan mengapa kokutuban air adalah panting untuk proses pelantan gertm int Berdesarkan konsep in jelasken mengape kolompang penghidralan natrlum lebih besar daripada kalium (30 merkalmarkah) se Identily the bwo factors that affect the hydration degree. eleea Kenalpasti 2 faktor yang mempenganhi daleh penghidratan. (20markalmerkah) fe Calculate the emt of a Danlell cel ot 25 C, when the concentration of znSO and CuBOe are 0.001 M and 01 M. The standard potentlal of the celt is 1.1 V.(Refer Appendir A) VS Kirakan ent sel Daniell pade 25 G, apabile kepekatan ZnSO, dan CuSOs masing-masing adalah Q.001 M don a1 M. Keupaye an plawal sef Wedalah 1.1 V. (Rauk Lampran A) (50 markaimarkah) al Solvation for salt in water needs energy to separate the ions in salt lattice With the aid of a diagram explain why the polarity of water is useful for solvation process of this salt. Based on this concept, explain why the hydration shell of sodium is larger than potassium. Pelarutan garam di dalam air memerlukan tenaga untuk memisahkan ion dari kekisi garam. Dengan bantuan gambarajah yang sesuai, terangkan mengapa kekutuban air adalah penting untuk proses pelarutan garam ini. Berdasarkan konsep ini, jelaskan mengapa kelompang penghidratan natrium lebih besar daripada kalium. (30marks/markah) Sire b] Identify the two factors that affect the hydration degree. \lechonegatiu. Kenalpasti 2 faktor yang mempengaruhi darjah penghidratan. (20 marks/markah) Calculate the emf of a Daniell cell at 25 °C, when the concentration of [c] Znso and CusO. are 0.001 M and 0.1 M. The standard potential of the cell is 1.1 V. (Refer Appendix A) Kirakan emf sel Danieli pada 25 °C, apabila kepekatan ZnSO, dan CuSO masing-masing adalah 0.001 M dan 0.1 M. Keupayaan piawai sel ini adalah 1.1 V. (Rujuk Lampiran A) (50 marks/markah)

Answer 1

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Dahe be approachad ey maaimm Mumse molecul es Jhe tuo factors tt af affect hydton Pacus Ion: Smaller Ions aie madimum ettent degree arre as (a) Size to hy deated Chorge Ions: Higher the Charge On redter e degreeyi ati on e.a hy drated to a , 3+ Zreeter eltext than Nat euati Netwt bh We have E u-E Cu00 q Ceu ceu faj 0.00(M Casen] TE 25 C 248-tsk = 0.1M Ceu= n 2e EEcMTUOros fo-0ot E cu 11V 6.054 (-2) Ceu AR 2 t-IV+0.059 AbSI-1