Pop Kuiz 3.2 HABA TINDAK BALAS
Quiz
•
Chemistry
•
2nd Grade
•
Medium
Raudatul Nabilah
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yang manakah antara berikut merupakan persamaan kimia bagi tindak balas antara plumbum (II) nitrat dengan natrium sulfat?
CaCl2(ak) + Na2CO3 (ak) → CaCO3(p) + NaCl (ak)
FeCl3 + NaOH → Fe(OH)3 + NaCl
PbSO4 (ak) + NaNO3 (ak) → Pb(NO3)2 (p) + Na2SO4 (ak)
Pb(NO3)2 (ak) + Na2SO4 (ak) → PbSO4 (p) + NaNO3 (ak)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
50cm3 larutan plumbum (II) nitrat 2 moldm-3 dituangkan ke dalam cawan plastik dan suhunya dicatatkan. Suhu 50cm3 larutan natrium sulfat 2moldm-3 dalam cawan plastik yang lain juga direkodkan. Kedua-dua larutan dicampurkan dan suhu tertinggi yang tercapai dicatatkan.
Suhu awal larutan plumbum (II) nitrat = 28.5 ⁰C
Suhu awal larutan natrium sulfat = 29.5 ⁰C
Suhu tertinggi campuran = 32.0⁰ C
Namakan mendakan yang terhasil daripada tindak balas ini.
Natrium nitrat
Plumbum (II) sulfat
Natrium sulfat
Plumbum (II) nitrat
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara yang berikut yang manakah mesti diketahui untuk menghitung haba pemendakan dalam tindak balas antara argentum nitrat dan natrium klorida?
Formula kimia bagi mendakan yang terbentuk
Bilangan mol bahan tindak balas adalah 1 mol
Tindak balas yang berlaku adalah eksotermik
Tiada haba yang telah hilang ke persekitaran
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Persamaan termokimia pembentukan mendakan barium sulfat:
BaS + H2SO4 → BaSO4 + H2S
Apakah warna mendakan tersebut?
Mendakan putih BaSO4
Mendakan perang BaSO4
Mendakan kuning
BaSO4
Mendakan biru
BaSO4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rajah menunjukkan satu eksperimen untuk menentukan haba pemendakan.
Nyatakan jenis tindak balas yang berlaku?
Tindak balas pengoksidaan
Tindak balas penurunan
Tindak balas penguraian ganda dua
Tindak balas penambahan
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A(p) + MX(ak) --------> AX (ak) + M(p)
Persamaan di atas merupakan suatu tindakbalas penyesaran logam.
Betul
Salah
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rajah menunjukkan tindak balas penyesaran logam kuprum daripada larutan kuprum(II)sulfat oleh paku besi.
Apakah pemerhatian yang diperoleh daripada tindak balas tersebut?
Enapan perang terbentuk pada paku
Larutan warna biru menjadi pudar
Larutan kuprum(II) sulfat semakin berkurang
Paku menjadi karat
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