TERMOKIMIA XI-6
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
mardiana z.w
Used 1+ times
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11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Perubahan entalpi adalah...
Perubahan jumlah mol zat dalam reaksi
Perubahan energi dalam sistem yang terjadi pada tekanan tetap
Perubahan suhu larutan
Perubahan massa reaktan
Answer explanation
Perubahan entalpi (∆H) adalah perubahan energi panas sistem pada tekanan konstan.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika ∆H reaksi bernilai negatif, maka reaksi tersebut bersifat...
Eksoterm
Isotorm
Endoterm
Isobar
3.
FILL IN THE BLANK QUESTION
30 sec • 2 pts
Sistem yang menyerap panas dari lingkungannya disebut...
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Diketahui reaksi:
2 H2(g) + O2(g) → 2 H2O(l) ΔH = -572 kJ
Jika dinyatakan dalam 1 mol zat, berapa ∆H nya?
-572 kJ
-286 kJ
-1144 kJ
-143 kJ
Answer explanation
2 mol H₂ → -572 kJ, jadi 1 mol H₂ → -286 kJ.
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Jika 4 mol CH₄ dibakar berdasarkan reaksi CH4 + 2 O2 → CO2 + 2 H2O ΔH = -890 kJ
-890Kj
-1780Kj
-3560Kj
-4450Kj
Answer explanation
1 mol → -890 kJ, 4 mol → -890 × 4 = -3560 kJ.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan yang benar tentang kalor pembentukan standar adalah ...
ΔH pembentukan selalu negatif
ΔH pembentukan diukur pada 25°C dan 1 atm
ΔH pembentukan adalah energi yang dilepas saat senyawa terurai
ΔH pembentukan selalu positif
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Manakah yang benar tentang reaksi endoterm?
ΔH positif, panas diserap
ΔH negatif, panas diserap
ΔH positif, panas dilepas
ΔH negatif, panas dilepas
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