UTS KIMIA KELAS XI
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
KIKI DWI RAHMAWATI
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah reaksi pembakaran sempurna metana (CH₄) menghasilkan karbon dioksida (CO₂) dan air (H₂O). Jika 22,4 L gas metana pada STP direaksikan sempurna dengan oksigen berlebih, berapa mol air yang dihasilkan?
0,5 mol
1 mol
2 mol
3 mol
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan molekul berikut: H₂O, CO₂, dan NH₃. Manakah dari molekul tersebut yang memiliki bentuk molekul bengkok?
H₂O
CO₂
H₂O dan CO₂
NH₃ dan CO₂
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Senyawa NO₂⁻ memiliki struktur Lewis dengan jumlah elektron valensi 18. Manakah pernyataan yang tepat terkait bentuk molekul NO₂⁻?
Memiliki bentuk segitiga planar dengan sudut ikatan 120°.
Memiliki bentuk bengkok dengan satu pasangan elektron bebas pada atom pusat.
Memiliki bentuk linear dengan distribusi elektron merata.
Memiliki bentuk tetrahedral karena adanya 4 pasangan elektron pada atom pusat.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa gram gas oksigen (O₂) yang diperlukan untuk membakar sempurna 8 gram gas metana (CH₄)?
(Ar C = 12, H = 1, O = 16)
32 gram
64 gram
16 gram
48 gram
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika 4 gram NaOH (Ar Na = 23, O = 16, H = 1) dilarutkan dalam 250 mL air, berapa konsentrasi molaritas larutan tersebut?
0,1 M
0,2 M
0,4 M
0,8 M
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebanyak 12 gram gas karbon dioksida (CO₂) dihasilkan dari pembakaran sempurna glukosa (C₆H₁₂O₆). Berapa mol glukosa yang dibutuhkan untuk menghasilkan CO₂ sebanyak itu?
0,05 mol
0,1 mol
0,2 mol
0,25 mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Manakah dari senyawa berikut yang memiliki jumlah elektron valensi terbanyak?
NH₃
H₂O
CCl₄
O₃
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