Persamaan Kimia
Quiz
•
Chemistry
•
4th - 5th Grade
•
Practice Problem
•
Hard
MOHAMAD Moe
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8 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Magnesium dibakar dalam oksigen untuk menghasilkan magnesium oksida.
2Mg + O2 → 2MgO
Mg + O → MgO
4Mg + O2 → 2Mg2O
2Mg + O → Mg2O
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Zink bertindak balas dengan asid nitrik untuk menghasilkan garam zink nitrat dan gas hidrogen.
Zn + 2HNO3 → Zn(NO3)2 + H2
Zn + 2HNO3 → Zn(NO3)2 + 2H
2Zn + 2HNO3 → 2ZnNO3 + H2
Zn + HNO3 → ZnNO3 + H
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Natrium dipanaskan dalam oksigen untuk menghasilkan natrium oksida.
4Na + O2 → 2Na2O
2Na + O2 → 2Na2O
2Na + O2 → 2NaO
2Na + O2 → 2Na2O
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kuprum (II) oksida bertindak balas dengan asid hidroklorik cair untuk menghasilkan garam kuprum (II) klorida dan wap air.
CuO + 2HCl →CuCl2 + H2O
CuO + HCl →CuCl + H2O
Cu2O + 4HCl →2CuCl2 + 2H2O
CuO + HCl →CuCl + H2O
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Logam ferum dipanaskan menggunakan gas klorin untuk menghasilkan serbuk perang ferum (III) klorida.
2Fe + 3Cl2 → 2FeCl3
Fe2 + 3Cl2 → 2FeCl3
Fe + 3Cl → FeCl3
Fe + Cl2 → FeCl2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kuprum (II) nitrat terurai apabila dipanaskan dengan kuat untuk menghasilkan kuprum (II) oksida, gas nitrogen dioksida dan gas oksigen.
2Cu(NO3)2 → 2CuO + 4NO2 + O2
2Cu(NO3)2 → 2CuO + 4NO + 3O2
2Cu(NO3)2 → 2CuO + 4NO2 + 6O
2CuNO3 → 2CuO + 2NO2 + O2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Magnesium bertindak balas dengan asid hidroklorik cair untuk menghasilkan haram magnesium klorida dan gas hidrogen.
Mg + 2HCl → MgCl2 + H2
Mg + HCl → MgCl + H
2Mg + 2HCl2 → 2MgCl2 + H2
Mg + 2HCl → MgCl2 + 2H
8.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Gas sulfur dioksida bertindak balas dengan gas oksigen dan menghasilkan gas sulfur trioksida.
2SO2 + O2 → 2SO3
2SO2 + 2O → 2SO3
3S2O + 1/2O2 → 2S3O
3S2O + O → 2S3O
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