PSAT KIMIA KELAS XI
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Easy
Supriyatna Agus
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perubahan entalpi dari suatu reaksi kimia disebut juga sebagai...
Energi dalam
Entropi
Kalor reaksi
Kerja
Kapasitas panas
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Hukum Hess menyatakan bahwa...
Entropi alam semesta selalu bertambah
Entalpi suatu reaksi hanya bergantung pada keadaan awal dan akhir
Semua proses spontan terjadi dengan penurunan energi bebas
Energi tidak dapat diciptakan atau dimusnahkan
Kalor yang dibutuhkan untuk mengubah 1 gram zat dari padat menjadi cair disebut kalor lebur
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Apakah satuan dari entalpi (H) dalam sistem SI?
Joule (J)
Kelvin (K)
Pascal (Pa)
Mole (mol)
Watt (W)
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika suatu reaksi kimia memiliki ΔH negatif, maka reaksi tersebut bersifat...
Endotermik
Eksotermik
Adiabatik
Isotermal
Isobarik
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Reaksi 2H2(g) + O2(g) → 2H2O(g) memiliki ΔH = -484 kJ. Berapakah ΔH untuk pembentukan 1 mol H2O(g)?
-121 kJ
-242 kJ
-484 kJ
-968 kJ
+484 kJ
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika diketahui reaksi berikut:
N2(g)+3H2(g)→2NH3(g) ΔH untuk reaksi ini adalah -92.4 kJ. Berapa besar energi yang dibutuhkan untuk menguraikan 1 mol NH3?
46.2 kJ
92.4 kJ
184.8 kJ
23.1 kJ
69.3 kJ
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui entalpi pembakaran:
CH4(g)+2O2(g) → CO2(g) + 2H2O(l) ; Δ𝐻=−890.3 kJ/mol. Berapa energi yang dilepaskan saat 2 mol CH4 dibakar?
-1780.6 kJ
-445.15 kJ
-890.3 kJ
-2225.75 kJ
-3561.2 kJ
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