រំលឹកមេរៀនថ្នាក់ទី១២ បំប៉ន (៧)

Quiz
•
Chemistry
•
12th Grade
•
Hard
Seng Rom
Used 5+ times
FREE Resource
16 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
សមីការគីមីៈ CaCO3 + 2HBr -> CaBr2 + H2O + CO2
តើសមាសធាតុណាខ្លះដែលមានផាស ជា aq?
CaCO3
HBr
CaBr2
H2O
CO2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
.................គឺជាកាតាលីករនៃប្រតិកម្ម ដោយផលិតផលកកើតមួយរបស់វា។
កាតាលីករ
កាតាលីស
ស្វ័យកាតាលីស
គ្មានចម្លើយ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
សមីការគីមីៈ 2A + 3B -> C + 4D
ចូរសរសេរទំនាក់ទំនងរវាងល្បឿនបំបាត់ A និងកំណ D នៅខណៈពេល t។
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
សូលុយស្យុងអាសុីតក្លរិច (HClO3) មួយមាន pH = 3.4។ សូ.នេះអាចមាន..........។ (100.6 = 4, 100.4 = 2.51)
[H3O+] = 4 x 10-4M
[H3O+] = 2.51 x 10-4M
[OH-] = 2.5 x 10-11M
pOH = 10.6
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
រូបមន្តបាសឆ្លាស់របស់អាសុីតស៊ុលភីឌ្រិច (H2S) គឺ......
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
រូបមន្តអាសុីតឆ្លាស់របស់បាស HCO3- គឺ CO32-
ត្រឹមត្រូវណាស់
មិនត្រឹមត្រូវ
មិនចេះ
មិនដឹង
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
ហេតុអ្វីបានជាសមាសធាតុ NaOH, K3PO4, Li2CO3 រលាយក្នុងទឹក?
ព្រោះវាចង់រលាយក្នុងទឹក
ព្រោះវាចូលចិត្តទឹក
ព្រោះវាបង្កឡើងពីលោហៈក្រុមទី១
ព្រោះវាមានបណ្តុំដែលអាចរលាយក្នុងទឹកជានិច្ច ដូចជា PO43-, CO32- និង OH-។
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