
REAKSI EKSOTERM DAN ENDOTERM
Authored by Widya Limra
Chemistry
2nd Grade

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Diantara reaksi berikut yang termasuk proses endoterm adalah….
Air ditetesi dengan asam sulfat pekat
Penetralan asam basa
Melarutkan pupuk ZA dalam air
Menambahkan air pada garam CuSO4
Pembakaran etanol
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Kedalam tabung reaksi dicampurkan larutan NH4Cl dan Kristal Ba(OH)2.8H2O, kemudian campuran diaduk, setelah tercampur ternyata campuran lebih dingin dari semula. Hal ini menunjukkan bahwa reaksi berlangsung….
Eksoterm, karena suhu berubah
Endoterm, karena menyerap kalor
Eksoterm, karena menyerap kalor
Endoterm, karena melepas kalor
Eksoterm, karena melepas kalor
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Per nyataan yang tepat tentang reaksi eksoterm adalah…
Terjadi perpindahan kalor dari lingkungan ke system
Terjadi perpindahan kalor dari system ke lingkungan
Energi system sebelum reaksi lebih kecil dari sesudah reaksi
Perubahan entalpinya positif
Reaksi yang membutuhkan panas
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Perhatikan data berikut :
Reaksi I : C3H8 + 5 O2 3 CO2 + 4 H2O ∆H = -1543 kJ
Reaksi II : NH4Cl + NaOH + NH3 + NaCl + H2O ∆H = +234 kJ
Pernyatan yang benar dari data tersebut adalah …
Reaksi I sistem menyerap energy, reaksi eksoterm
Reaksi II sistem menyerap energy, reaksi eksoterm
Reaksi II sistem menyerap energy, reaksi endoterm
Reaksi I sistem menyerap energy , reaksi endoterm
Reaksi II sistem melepas energy , reaksi endoterm
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Apabila natrium hidroksida ( NaOH ) dilarutkan ke dalam air, maka terjadi perubahan suhu dari 250 C menjadi 300 C. pernyataan yang benar tentang reaksi tersebut adalah..
Reaksi eksotermis, kalor dari sistem ke lingkungan
Reaksi eksotermis, kalor dari lingkungan ke sistem
Reaksi endotermis, kalor dari sistem ke lingkungan
Reaksi endotermis, kalor dari lingkungan ke sistem
Bukan termasuk reaksi termokimia
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