Termokimia - Haba Pemendakan

Quiz
•
Chemistry
•
5th Grade
•
Medium
walhanna moe
Used 110+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
60 cm3 larutan argentum nitrat 0.25 mol dm-3 bertindak balas dengan 60 cm3 larutan kalium bromida 0.25 mol dm-3 dengan suhu purata 290C. Mendakan kuning terbentuk dan suhu tertinggi dicapai ialah 320C. Tentukan haba tindak balas, ΔH.
1512 J mol-1
100.8 J mol -1
100.8 kJ mol-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara yang berikut, manakah bukan merupakan ciri-ciri suatu tindak balas endotermik?
Tindak balas yang menyerap tenaga haba daripada persekitaran.
Suhu sekeliling meningkat.
Perubahan tenaga haba (H) adalah positif.
Kandungan tenaga hasil tindak balas adalah lebih tinggi daripada tenaga bahan tindak balas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Persamaan termokimia di bawah menunjukkan tindak balas antara natrium sulfat dan barium klorida.
Antara yang berikut, manakah menunjukkan bahawa ia adalah suatu tindak balas eksotermik?
Penurunan suhu.
Peningkatan suhu.
Pembentukan pemendakan.
Penggunaan tenaga.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Apabila 50 cm3 argentum nitrat 1.5 mol dm–3 ditambahkan kepada 50 cm3 natrium klorida 1.5 mol dm–3, haba pemendakan ialah –80 kJ mol–1. Apakah perubahan suhu?
[Muatan haba tentu larutan = 4 J g–1 °C]
7 °C
14 °C
21 °C
28 °C
5.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Apabila 25 cm3 larutan argentum nitrat 0.25 mol dm-3 ditambah kepada 25 cm3 larutan natrium klorida 0.25 mol dm-3 , suhu campuran tinadk balas naik sebanyak 30C. Berapakah kuantiti haba yang dibebaskan dalam eksperimen ini?
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