Grade 12 - Chemistry Exercise #1

Grade 12 - Chemistry Exercise #1

12th Grade

10 Qs

quiz-placeholder

Similar activities

Writing Chemical Equations

Writing Chemical Equations

10th - 12th Grade

10 Qs

Grade 12 - Chemistry Exercise #3

Grade 12 - Chemistry Exercise #3

12th Grade

13 Qs

Menentukan BILOKS

Menentukan BILOKS

10th - 12th Grade

10 Qs

Biloks - Redoks

Biloks - Redoks

12th Grade

15 Qs

REAKSI REDOKS

REAKSI REDOKS

12th Grade

12 Qs

Penyetaraan Rodoks

Penyetaraan Rodoks

12th Grade

10 Qs

Redox  Reactions

Redox Reactions

10th - 12th Grade

11 Qs

SMA PLUS ASTHA HANNAS (LATIHAN SOAL)

SMA PLUS ASTHA HANNAS (LATIHAN SOAL)

12th Grade

15 Qs

Grade 12 - Chemistry Exercise #1

Grade 12 - Chemistry Exercise #1

Assessment

Quiz

Chemistry

12th Grade

Hard

Created by

Rodwel Kov

Used 103+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

1.រកគូរេដុកដែលត្រូវនឹងសមីការខាងក្រោមនេះ
 SO2+2H2S+2H2OSO_2+2H_2\rightarrow S+2H_2O  

 SO2 /SSO_2\ \text{/}S  

 S2O /S2S_2O\ \text{/}S_2  

 H2O /H2H_2O\ \text{/}H_2  

 HO2 /HHO_2\ \text{/}H  

2.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

1. ធ្វើចំណាត់ថ្នាក់គូរេដុកដែលត្រូវនឹងសមីការខាងក្រោមនេះ 
 SO2+2H2S+2H2OSO_2+2H_2\rightarrow S+2H_2O  

Media Image
Media Image
Media Image
Media Image

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

1. រកគូរេដុកដែលត្រូវនឹងសមីការខាងក្រោមនេះ
 Cr2O72+6Cl+14H+Cr_2O_7^{2-}+6Cl^-+14H^+  
 2Cr3++3Cl2+7H2O\rightarrow2Cr^{3+}+3Cl_2+7H_2O  

 Cl /Cl2Cl^-\ \text{/}Cl_2  

 Cr2O72 /Cr3+Cr_2O_7^{2-}\ \text{/}Cr^{3+}  

 Cl2 /ClCl_2\ \text{/}Cl^-  

 HO2 /HHO_2\ \text{/}H  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

1. ធ្វើចំណាត់ថ្នាក់គូរេដុកដែលត្រូវនឹងសមីការខាងក្រោមនេះ
 Cr_2O_7^{2-}+6Cl^-+14H^+   \rightarrow2Cr^{3+}+3Cl_2+7H_2O  

Media Image
Media Image
Media Image
Media Image

5.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

  2. ប្រតិកម្មមួយតាងដោយសមីការៈ A +2BC+3DA\ +2B\rightarrow C+3D  នៅពេល t=10mint=10\min   មាន [D]= 3.50×103M3.50\times10^{-3}M  និង   t=25 mint=25\ \min  មាន​  [D]=9.50×103M\left[D\right]=9.50\times10^{-3}M 

I).គណនាល្បឿនមធ្យមកំណ D នៅចន្លោះពេល t= 10 minនិង t= 25min ។
II).គណនាល្បឿនមធ្យមបំបាត់ B នៅចន្លោះពេល t= 10 minនិង t= 25min ។

I). 2×104M/min2\times10_{ }^{-4}M/\min  

I). 4×104M/min4\times10^{-4}M/\min  

I). 4×103M/min4\times10^{-3}M/\min  

II). 2.66×104M/min2.66\times10^{-4}M/\min  

II). 1.33×104M/min1.33\times10^{-4}M/\min  

6.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

2. ប្រតិកម្មមួយតាងដោយសមីការៈ  A+2BC+3DA+2B\rightarrow C+3D  
នៅពេល  t=10mint=10\min  
  មាន [D]=  3.5×103M3.5\times10^{-3}M  និង​  t=25mint=25\min  
  មាន​  [D]= 9.50×103M9.50\times10^{-3}M  ។
III).ចូរគូសក្រាបតាងការវិវត្តកំហាប់​ D និង​ ​B ជាអនុគមន៍នៃពេល។
(1&2 D) and (3&4 B)

Media Image
Media Image
Media Image
Media Image

7.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

3. គេមានប្រតិកម្មៈ MnO4+H2C2O4 + H+MnO_4^-+H_2C_2O_4\ +\ H^+  
  Mn2++ CO2 + H2O\rightarrow\ Mn^{2+}+\ CO_2\ +\ H_2O  
I.តើណាខ្លះជាអង្គធាតុប្រតិករ ? ណាខ្លះជាអង្គធាតុកកើត ? 

អង្គធាតុប្រតិករ:  MnO4 , H2C2O4, H+ MnO_4^{-\ },\ H_2C_2O_4,\ H^+\   

អង្គធាតុប្រតិករ: Mn2+, CO2, H2OMn^{2+},\ CO_2,\ H_2O  

អង្គធាតុកកើត:  Mn2+, CO2, H2OMn^{2+},\ CO_2,\ H_2O  

អង្គធាតុកកើត: MnO4 , H2C2O4, H+ MnO_4^{-\ },\ H_2C_2O_4,\ H^+\   

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?