TERMOKIMIA KELAS XI
Quiz
•
Chemistry
•
11th Grade
•
Medium
Purwo Rahadityo
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Seorang siswa melakukan percobaan dengan melarutkan urea dalam air di sebuah wadah. Selama proses pelarutan, siswa merasakan wadah menjadi dingin. Berdasarkan pengamatan tersebut, apakah reaksi pelarutan urea dalam air termasuk reaksi ....
pembakaran
eksoterm
adisi
endoterm
halogenasi
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diagram tersebut (di bawah ini) adalah diagram reaksi ....
eksoterm
termokimia
entalpi pembentukan
endoterm
entalpi penguraian
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diagram reaksi penetralan di bawah ini jika dilihat dari masuk serta lepasnya kalor termasuk reaksi ...
eksoterm
termokimia
entalpi pembentukan
endoterm
entalpi penguraian
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Di bawah ini yang termasuk proses eksoterm adalah ...
Es batu meleleh
pembakaran
fotosintesis
membuat larutan garam
memasak telur
5.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diketahui persamaan termokimia reaksi pembakaran C2H2 sebagai berikut :
2C2H2 + 5O2 ==> 4CO2 + 2H2O ΔH = -2599,1 kJ
Maka entalpi pembakaran standar C2H2 adalah .....
-1299,55 kJ
+1299,55 kJ
-2599,1 kJ
+2599,1 kJ
+3000 kJ
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Pembakaran sempurna 1 gram CH4 membentuk gas karbondioksida dan air pada keadaan standar menghasilkan 55,625 kJ. Tentukan entalpi pembakaran molar standar (ΔHc) dari CH4 ! ( Ar H=1, Ar C=12)
+890 kJ/mol
-890 kJ/mol
+895 kJ/mol
-895 kJ/mol
-900 kJ/mol
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Suatu kalorimeter bom berisi 250 mL air yang suhunya 25oC, kemudian dibakar 200 mg gas metana. Suhu tertinggi yang dicapai air dalam kalorimeter adalah 35oC. Jika kapasitas kalorimeter 75 J/oC dan kalor jenis air = 4,2 J/g/oC, tentukan entalpi pembakaran gas metana !
-700 kJ/mol
-800 kJ/mol
-900 kJ/mol
-950 kJ/mol
-1000 kJ/mol
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