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NO. 3<br />

Diketahui persamaan<br />

termokimia sebagai berikut :<br />

H 2 O (l) à H 2 (g) + ½ O 2 (g)<br />

Δ H = + 285,85 kJ<br />

H 2 (g) + ½ O 2 (g) à H 2 O (g)<br />

Δ H = - 241,8 kJ<br />

H 2 O (l) à H 2 O (s)<br />

Δ H = - 5,88 kJ<br />

Hitung perubahan entalpi dari<br />

es menjadi uap !<br />

I 2 (g) +3Cl 2 (g) → 2ICl 2 (s)<br />

∆H = -214 kJ/mol<br />

I 2 (s) → I 2 (g) ∆H = + 38 kJ/mol<br />

Hitung perubahan entalpi<br />

standar pembnetukan iod<br />

triklorida ICl 3 !

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