
Termokimia
Authored by Penggerak Smantiq
Chemistry
11th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Jika sebongkah kapur tohor dimasukkan ke dalam tabung reaksi yang berisi, maka tabung reaksi akan terasa panas. Reaksi yang terjadi dapat digolongkan ke dalam reaksi....
Eksoterm, energi berpidah dar lingkungan ke sistem
Eksoterm, energi berpindah dari sistem ke lingkungan
Endoterm, energi berpidah dari sitem ke lingkungan.
Endoterm, energi berpindah dari lingkungan ke sistem
Endoterm, tidak ada perpindahan energi
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gambar yang menunjukkan proses endoterm adalah gambar nomor...
1 dan 2
1 dan 4
2 dan 3
2 dan 4
3 dan 4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Batu kapur direaksikan dengan dengan air di dalam tabung reaksi. Zat yang bertindak sebagai sistem adalah...
Air
air dan batu kapur
Batu kapur
udara
Tabung reaksi
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Perhatikan reaksi-reaksi berikut:
1) CH4 (g) + 2O2 (g) → CO2 (g) + 2 H2O (g) ΔH = - 820,3 kJ
2) 2SO2 (g) + O2 (g) → 2SO3 (g) ΔH = - 190 kJ
3) CO2 (g) → C (s) + O2 (g) ΔH = + 393,5 kJ
4) ½ H2 (g) + ½ Cl2 (g) →HCl (g) ΔH = - 92 kJ
Reaksi yang menunjukkkan ΔHf0, ΔHc0, ΔHd0 berturut-turut adalah ....
4), 1) dan 3)
3), 2), dan 1)
2), 4), dan 3)
2), 3), dan 4)
1), 3), dan 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Data reaksi : 2H2(g) + 02(g) 2H2O(ℓ) ΔH = -572 Kj
Persamaan reaksi di atas berarti ....
Reaksi pembentukan 1 mol air diperlukan kalor 286 kJ
Reaksi pembentukan 2 mol air diperlukan kalor 286 kJ
Reaksi pembakaran 1 mol hidrogen dilepaskan kalor 572 kJ
Reaksi pembentukan uap air adalah -286 kJ
Reaksi pembentukan 2 mol air dilepaskan kalor 572 kJ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada proses eksoterm . . .
Entalpi sistem bertambah dan perubahan entalpi positif.
Entalpi sistem berkurang dan perubahan entalpi negatif.
Entalpi sistem berkurang dan perubahan entalpi positif.
Entalpi sistem bertambah dan perubahan entalpi negatif
Entalpi lingkungan berkurang dan perubahan entalpi negatif.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1. Air sebanyak 2L dipanaskan dengan pembakaran elpiji dari suhu 270C menjadi 750C. elpiji di anggap C3H8 (Mr=44) dan yang terbakar sebanyak 44 gram. seluruh energi dari pembakaran elpiji digunakan untuk menaikkan suhu air. Jika diketahui massa jenis air= 1 g/L, dan kalor jenis air = 4,2 Jg-1 0C, besarnya perubahan entalpi reaksi pembakaran elpiji ...... kJ/mol.
-403,2
-4,18
4,18
403,2
420
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