
Termokimia (1)
Authored by Aida Jahaya
Chemistry
5th Grade
Used 25+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, pernyataan manakah BENAR tentang tindak balas eksotermik?
Tiada haba yang dibebaskan atau diserap semasa pemutusan ikatan dan pembentukan ikatan.
Haba yang diserap semasa pemutusan ikatan lebih banyak daripada haba yang dibebaskan semasa pembentukan ikatan.
Haba yang diserap semasa pemutusan ikatan adalah kurang daripada haba yang dibebaskan semasa pembentukan ikatan.
Haba yang diserap semasa pemutusan ikatan adalah sama dengan haba yang dibebaskan semasa pembentukan ikatan.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tindak balas yang manakah eksotermik?
Penguraian
Peneutralan
Fotosintesis
Penitratan
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, pasangan yang manakah menghasilkan haba peneutralan yang paling rendah?
Larutan kalium hidroksida dan asid sulfurik
Larutan ammonia dan asid sulfurik
Asid etanoik dan larutan ammonia
Asid etanoik dan larutan kalium hidroksida
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Persamaan termokimia mewakili tindak balas antara 100 cm3 asid hidroklorik 1.0 mol dm-3 dengan larutan 100 cm3 larutan natrium hidroksida 1.0 mol dm-3.
HCl + NaOH ----------> NaCI + H2O
Haba peneutralan= - 57.3 kJ/mol
Berapakah haba yang dibebaskan?
2.865 kJ
5.73 kJ
286 J
573 J
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Persamaan termokimia berikut menunjukkan tindak balas pembakaran lengkap antara gas metana dan gas oksigen.
CH4 + 2O2 ----------> CO2 + 2H2O
Haba pembakaran = -890.4 kJ/mol
Hitungkan perubahan suhu sekiranya 2.4 dm3 gas metana terbakar dengan lengkap pada suhu bilik untuk memanaskan 2 kg air.
1.6 0C
5.3 0C
10.6 0C
21.2 0C
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Aida diberikan 9g serbuk glukosa, C6H12O6. Dia membakar serbuk glukosa tersebut untuk memanaskan 500 cm3 air pada suhu 100C. Hitung haba pembakaran serbuk glukosa.
[JAR : H= 1, C=12]
-2.1 kJ/mol
-4.2 kJ/mol
-21 kJ/mol
-42 kJ/mol
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