Pernyataan yang benar tentang reaksi endoterm adalah ….
POSTES TERMOKIMIA

Quiz
•
Science
•
9th - 12th Grade
•
Hard
Muhibuddin abu salim
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika satu sendok serbuk seng dimasukkan ke dalam gelas kimia yang berisi larutan HCl, ternyata terbentuk gelembung gas dan dasar tabung terasa panas. Reaksi ini dapat digolongakan....
Eksoterm, energi berpindah dari sistem ke lingkungan
Eksoterm, energi berpindah dari lingkungan ke sistem
Endoterm, energi berpindah dari sistem ke lingkungan
Endoterm, energi berpindah dari lingkungan ke sistem
Endoterm, energi tidak berpindah
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kalor pembentukan 𝐴𝑔𝑁𝑂3 = -23 kkal mol-1. Pernyataan ini dapat ditulis ....
𝐴𝑔+ + 𝑁𝑂− → 𝐴𝑔𝑁𝑂3 ; ∆𝐻 = -23 kkal
2𝐴𝑔(𝑠) + 𝑁2(g) + 3𝑂2(g) → 2𝐴𝑔𝑁𝑂3(𝑠) ; ∆𝐻 = -46 kkal
2𝐴𝑔(𝑠) + 2𝐻𝑁𝑂3(𝑎𝑞) → 2𝐴𝑔𝑁𝑂3 + 𝐻2(g) ; ∆𝐻 = -46 kkal
𝐴𝑔2𝑂(𝑠) + 𝑁2𝑂5(g) → 2𝐴𝑔𝑁𝑂3 ; ∆𝐻 = -46 kkal
𝐴𝑔(𝑠) +𝑁𝑂2(g) + 2 𝑂2(g) → 𝐴𝑔𝑁𝑂3 ; ∆𝐻 ; -23 kkal
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perubahan entalpi reaksi
𝐶3𝐻8(g) + 5𝑂2(g) → 3𝐶𝑂2(g) + 4𝐻2𝑂(g) ; ∆𝐻 = x kJ dapat juga disebut....
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui reaksi 𝑁𝑎𝑂𝐻 + 𝐻𝐶𝑙 → 𝑁𝑎𝐶𝑙 + 𝐻2𝑂 ; ∆𝐻 = -56 kJ. Jika 100 cm3 larutan HCl 0,25 M direaksikan dengan 200 cm3 larutan NaOH 0,15 M, ∆𝐻 reaksinya adalah...
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
480 Kj /mol
1,574 kj/mol
8,014 Kj/mol
6520 kj/mol
750 kj/mol
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
𝐶6𝐻12𝑂6 + 6𝑂2 → 6𝐶𝑂2 + 6𝐻2𝑂 ; ∆𝐻 = -2820 Kj
𝐶2𝐻5𝑂𝐻 + 3𝑂2 → 2𝐶𝑂2 + 3𝐻2𝑂 ; ∆𝐻 = -1380 kJ
Perubahan entalpi fermentasi glukosa (𝐶6𝐻12𝑂6→2𝐶2𝐻5𝑂𝐻+2𝐶𝑂2) adalah....
8.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui entalpi pembentukan 𝐻2𝑂(𝑙)= - 258 kJ mol-1 , 𝐶𝑂2(g)= - 393 kJ mol-1 dan 𝐶2𝐻2(g)= +227 kJ mol-1 . jumlah kalor yang dibebaskan pada pembakaran 0,52 g gas 𝐶2𝐻2 (Mr = 26) adalah....
25,42 kj
47,06 kj
67,49 kj
90,50 kj
129,80 kj
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