
Ujian Akhir Kimia XI MIPA 2024/2025
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
VEGA ZULIA PUTRI ADI
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(a+b) kj
(-a+2b) kj
(a-2b) kj
(a+2b) kj
(2a+b) kj
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alkohol lebih mudah terbakar daripada minyak tanah, sebab alkohol….
Lebih mudah menguap
Lebih kecil energi aktivasinya
Lebih reaktif
Lebih rendah massa jenisnya
Lebih kecil massa rumusnya
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berdasarkan siklus diatas maka ΔHf° CH4 adalah…
+790
-790
-396
+396
0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berdasarkan diagram tersebut, maka ΔH2 sebesar…
-124,25 kJ/mol
-90,37 kJ/mol
-56,49 kJ/mol
+56,49 kJ/mol
124,25 kJ/mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika reaksi: N2(g) + 3H2(g) → 2NH3(g) laju reaksi pembentukan gas NH3 adalah r mol/L-s, maka …
Reaksinya tingkat satu terhadap gas nitrogen
Banyaknya H2 yang bereaksi tiap sekon adalah 3r mol/L
Gas N2 yang berkurang adalah 2r mol setiap sekon
Jumlah NH3 yang terjadi tidak dipengaruhi oleh konsentrasi awal H2
Pada detik pertama, NH3 yang bereaksi sebanyak r mol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fungsi katalis adalah untuk…
Menaikkan energi kinetik molekul pereaksi
Menurunkan energi aktivasi dari seluruh reaksi
Mengubah jalannya reaksi sehingga energi aktivasinya turun
Meningkatkan frekuensi tumbukan antar partikel yang bereaksi
Menaikkan energi aktivasi dan energi kinetik molekul yang bereaksi
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi pembakaran gas karbon monoksida sebagai berikut.
Perhatikan reaksi pembakaran gas karbon monoksida sebagai berikut.
Mg(s) + 2HCl(g) → MgCl2(aq) + H2(g)
Grafik yang menggambarkan hubungan antara konsentrasi H2 terhadap waktu dengan tepat adalah…
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