Latihan PAS Ganjil Kelas XI
Quiz
•
Chemistry
•
11th Grade
•
Medium
nani sudianti
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rumus molekul senyawa hidrokarbon berikut yang merupakan senyawa hidrokarbon tak jenuh adalah ....
CH4
C3H8
C5H12
C6H10
C8H18
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Meningkatnya hasil pembakaran bensin pada kendaraan bermotor berupa gas karbon monoksida menyebabkan banyak kerugian karena dapat ....
menyebabkan korosi
memicu pembentukan kabut
berperan dalam penipisan ozon
mengikat hemoglobin dalam darah sehingga hemoglobin tidak dapat mengikat oksigen
menimbulkan hujan asam
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut pernyataan yang benar tentang reaksi eksoterm adalah....
entalpi awal lebih besar dari entalpi akhir dan ∆h > 0
entalpi awal lebih kecil dari entalpi akhir dan ∆h > 0
entalpi awal lebih besar dari entalpi akhir dan ∆h < 0
entalpi awal lebih kecil dari entalpi akhir dan ∆h < 0
entalpi awal sama dengan entalpi akhir dan ∆h = 0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika 1 mol gas hidrogen direaksikan dengan 0,5 mol gas oksigen, akan terbentuk uap air. Reaksi tersebut membutuhkan (menyerap) kalor sebesar 242 kJ. Persamaan termokimianya adalah....
H2O(g) --> H2(g) + ½ O2(g), ∆H= -242 kJ
2H2O(g) --> 2H2(g) + O2(g), ∆H= -242 kJ
2H2(g) + O2(g) --> 2H2O(g), ∆H= -242 kJ
H2(g) + ½ O2(g) --> H2O(g), ∆H= +242 kJ
2H2(g) + O2(g) --> 2H2O(g), ∆H= +242 kJ
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Persamaan reaksi pembuatan NH3 dari gas N2 dan gas H2 adalah:
N2(g) + 3H2(g) --> 2NH3(g) , ∆H = -97 kJ.
Jika diketahui energi ikatan:
N≡N : +941 kJ/mol
H–H : +436 kJ/mol
maka energi ikatan rata-rata N–H dalam NH3 adalah ....
97 kJ/mol
391 kJ/mol
322 kJ/mol
285 kJ/mol
173 kJ/mol
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berikut data beberapa reaksi beserta entalpi nya:
I. MO2 + CO --> MO + CO2 , ∆H = -20 kJ
II. M3O4 + CO --> 3MO + CO2 , ∆H = +6 kJ
III. 3M2O3 + CO --> 2M3O4 + CO2 , ∆H = -12 kJ
Dari data tersebut, nilai ∆H untuk reaksi
2MO2 + 4MO + CO2 --> 3M2O3 + CO adalah ... kJ.
-40
-28
-26
-28
+18
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Orde reaksi X dan Y berturut-turut ....
2 dan 0,5
2 dan 1
2 dan 2
0,5 dan 2
0,5 dan 1
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