HABA PENYESARAN
Quiz
•
Chemistry
•
9th - 12th Grade
•
Easy
hamdan pare
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Besi yang manakah paling reaktif
Aluminium
zink
kuprum
ferum
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CuSO4 boleh disesarkan oleh elemen berikut KECUALI?
Magnesium
argentum
zink
plumbum
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bahan tindak balas yang manakah menghasilkan haba penyesaran
asid hidroklorik + natrium hidroksida
etanol + oksigen
plumbum nitrat + potassium iodida
argentum nitrate + kuprum
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapakah tindak balas magnesium dan kuprum(ii) sulfat lebih tinggi daripada zn dan kuprum (ii) sulfat
magnesium lebih elektropositif daripada zink
mempunyai proton yang lebih tinggi
ikatan kimia lebih tinggi
Saiz magnesium lebih besar
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5 g Serbuk zink di masukkan ke dalam 100cm3 larutan plumbum (II)nitrat 0.5moldm-3 . Persamaan termokimia bagi tindak balas ini ditunjukkan di bawah.
Zn + Pb2+ → Zn2+ + Pb ∆H = -110kJmol-1
Hitung perubahan haba yang berlaku
[Muatan haba tentu larutan :4.2 Jg-1˚C-1 ]
2500 J
3000 J
5500 J
6500 J
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