ថ្នាក់ទី១២ បំប៉៉ន (តេស្ត ធ)
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Seng Rom
Used 6+ times
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11 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
១. សមីការគីមីៈ CaCO3(S) + 2HCl(aq) -> CaCl2 + H2O + CO2
ចូរជ្រើសកត្តាបីខាងក្រោមដែលអាចជួយជំរុញល្បឿនប្រតិកម្មគីមីនេះ។
បង្កើតកំហាប់ HCl
បន្ថែមទឹក
បង្កើតសីតុណ្ហភាព
បំបែកដុំ CaCO3 ឲ្យក្លាយជាម្សៅ
បង្កើតសម្ពាធ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
រូបមន្តគីមីរបស់ ប៉ូតាស្យូមស៊ុលភីតគឺ
K2S
K2SO3
K2SO4
K3PO4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
សមីការគីមីៈ 3A + 2B -> C + 9D
បើល្បឿនបំបាត់ A ស្មើនឹង 0.000240M/s នៅខណៈ t ចូរគណនាល្បឿនកំណ C នៅខណៈ t ដូចគ្នា។
V(C)t = 8 x 10-3M/s
V(C)t = 8 x 10-4M/s
V(C)t = 8 x 10-5M/s
V(C)t = 8 x 10-6M/s
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
សមីការគីមីៈ 3A + 2B -> C + 9D
បើល្បឿនបំបាត់ A ស្មើនឹង 0.000240M/s នៅខណៈ t ចូរគណនាល្បឿនកំណ D នៅខណៈ t ដូចគ្នា។
V(D)t = 6.5 x 10-4M/s
V(D)t = 7.2 x 10-4M/s
V(D)t = 8.9 x 10-4M/s
V(D)t = 4.5 x 10-4M/s
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
គេមានប្រតិ. Fe(S) + 2HCl(aq) -> FeCl2(aq) + H2(g)
តើកត្តាមួយណាខាងក្រោមដែលអាចជួយបង្កើនល្បឿនប្រតិកម្មនេះ?
បង្កើនសម្ពាធ
បន្ថែមកំហាប់ FeCl2
បន្ថយកំហាប់ HCl
បំបែកដុំ Fe ឲ្យក្លាយជាម្សៅ
បន្ថែមកំហាប់ HCl
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
សមីការគីមីៈ H2O2 + 2H+ + 2I- -> 2H2O + I2
ចូរកំណត់កំហាប់ I2 នៅពេលអនន្ត។
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
សមីការគីមីៈ H2O2 + 2H+ + 2I- -> 2H2O + I2
ចូរកំណត់កំហាប់ I- នៅពេល t = 15s។
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