Kuis Termokimia
Quiz
•
Chemistry
•
11th Grade
•
Medium
katya syifadewi
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ketika kayu dibakar, energi panas dan cahaya dihasilkan. Reaksi ini merupakan:
Reaksi Endoterm, karena menyerap panas dari lingkungan
Reaksi Eksoterm, karena melepaskan panas kelingkungan
Reaksi Endoterm, karena menurunkan suhu lingkungan
Reaksi yang tidak menghasilkan panas
Reaksi yang melibatkan perubahan energi
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Perhatikan beberapa persamaan reaksi termokimia diatas.
Besarnya perubahan entalpi pembakaran standar C2H5OH menurut reaksi :
C2H5OH(l) + 3O2(g) → 2CO2 (g) + 3H2O(g) adalah....
-1368 kJ
-958 kJ
-402 kJ
+1368 kJ
-1367 kJ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada reaksi 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
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara yang berikut ini:
(1) Fotosintesis
(2) Pembakaran
(3) Respirasi
(4) dekomposisi termal
(5) pelelehan
Yang tergolong proses endoterm adalah....
(1), (2), dan (3)
(1), (4) dan (5)
(2), (3), dan (5)
(2), (3), dan (4)
(1), (2), (3), (4) dan (5)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapa suhu minuman dingin lebih rendah setelah menambahkkan es batu?
Karena es batu menyerap panas dari lingkungan
Karena es batu mengeluarkan panas dari minuman
Karena es batu menyerap panas dari minuman
Karena es batu menambah panas dari minuman
Karena es batu menambah panas dari lingkungan
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
ketika pembentukan NH4Cl(s) pada keadaan standar adalah -314,4 kJ mol-1. Persamaan manakah dari persamaan termokimia berikut yang menggambarkan data tersebut?
NH3 (g) + HCl (g) → NH4Cl(s) ΔH = -314,4 kJ
NH4+ (g) + Cl- (g) → 2NH4Cl(s) ΔH = -314,4 kJ
N2 (g) + 4H2 (g) + Cl2 (g) → 2NH4Cl(s) ΔH = -628,8 kJ
NH3 (g) + 1/2H2 (g) + 1/2Cl2 (g) → NH4Cl(s) ΔH = -314,4 kJ
N2 (g) + 3H2 (g) + 2HCl (g) → 2NH4Cl(s) ΔH = -628 kJ
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CaCO3 (s) → CaO(s) + CO2 ∆H = +178 kJ
Diagram tingkat energi yang sesuai dengan data tersebut adalah ....
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