TERMOKIMIA 2
Quiz
•
Chemistry
•
4th Grade
•
Hard
shokhifatul ilmiah
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Pernyataan tidak tepat dari reaksi pembakaran bensin di bawah ini :
C8H18 (l) + 8½ O2 (g) → 8CO (g) + 9 H2O(g) ΔH = -2.924 kJ/mol, adalah....
Merupakan reaksi eksoterm
Merupakan pembakaran tidak sempurna
Menghasilkan gas beracun
Melepaskan energi atau kalor ke lingkungan
Merupakan reaksi penguraian C8H18
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reaksi termokimia :
S (s) + O2 (g) → SO2 (g) ΔH = -y kJ
Pernyataan berikut yang tidak benar adalah.... (Ar S = 32)
ΔH pembentukan SO2 = -y kJ
ΔH pembakaran S = -y kJ
ΔH penguraian SO2 = +y kJ
Pada pembentukan 2 mol SO2 dibebaskan kalor sebesar y kJ
Pada pembakaran 16 gram S dibebaskan kalor sebesar ½y kJ
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Perhatikan reaksi berikut:
C2H2 +5 O2 → 4CO2+ 2 H2O ΔH = -2600 kJ
Pernyataan yang benar adalah....
Entalpi pembentukan C2H2 = -2600 kJ
Entalpi pembakaran C2H2 = -2600 kJ
Entalpi pembentukan C2H2 = -1300 kJ
Entalpi pembakaran C2H2 = -1300 kJ
Entalpi pembentukan CO2 dan H2O = -1300 Kj
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reaksi : 2H2 (g) +O2 (g) → 2 H2O (l) ΔH = -572 kJ
Persamaan reaksi diatas 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
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reaksi antara 1 mol gas metana dengan 2 mol gas oksigen membentuk 1 mol gas karbondioksida dan 2 mol uap air ,disertai dengan pelepasan panas. Reaksi tersebut merupakan reaksi....
Substitusi
Endoterm
Eksoterm
Netralisasi
Penguraian
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Diketahui reaksi:
NO (g) → ½ N2 + ½ O2 (g) . Jika entalpi N2 dan O2 lebih besar dari pada entalpi NO, reaksi tersebut disebut reaksi....
penguraian
pembentukan
pembakaran
netralisasi
substitusi
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Diketahui reaksi : C (s) + O2 (g) → CO2 (g) ΔH = -393,5 kJ/mol
Diagram tingkat energinya adalah....
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