
Ester
Quiz
•
Chemistry
•
5th Grade
•
Hard
NOORSYAHIRAH KPM-Guru
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The following chemical equation shows of reaction. What is the structural formula of compound A?
Persamaan kimia berikut menunjukkan suatu tindak balas. Apakah formula struktur bagi sebatian A?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Esterification between propanol and propanoic acid is added with a little of concentrated sulphuric acid. What is the function of the sulphuric acid in this reaction?
Pengesteran antara propanol dan asid propanoik ditambahkan dengan sedikit asid sulfurik pekat. Apakah fungsi asid sulfurik itu dalam tindak balas ini?
to prevent the ester formed from decomposing
untuk mencegah ester yang terbentuk daripada terurai
to lower the activation energy of reaction
untuk merendahkan tenaga pengaktifan tindak balas
to prevent propanol from being oxidised to propanoic acid
untuk mencegah propanol daripada teroksida kepada asid propanoik
to lower the temperature required for the reaction
untuk merendahkan suhu yang diperlukan untuk tindak balas
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Butan-1-ol reacts with ethanoic acid to produce
Butan-1-ol bertindak balas dengan asid etanoik menghasilkan
CH3COOC4H9
C2H5COOC4H9
C3H7COOC2H5
C4H9COOC4H9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following pairs of substance used to prepare ester with the formula C2H5COOC2H5 is correct?
Antara pasangan bahan digunakan untuk menyediakan ester dengan formula C2H5COOC2H5 berikut, yang manakah betul?
Ethanol and ethanoic acid
Etanol dan asid etanoik
Ethanol and propanoic acid
Etanol dan asid propanoik
Propanol and ethanoic acid
Propanol dan asid etanoik
Propanol and propanoic acid
Propanol dan asid propanoik
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Apakah kumpulan berfungsi ester?
Karboksil
Karboksilat
Hidroksil
Alkena
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the structural formula for an ester formed when ethanol, C2H5OH reacts with propanoic acid, C2H5COOH?
Apakah formula struktur bagi suatu ester yang terbentuk apabila etanol, C2H5OH bertindak balas dengan asid propanoik, C2H5COOH?
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Nama ester tersebut adalah
metil etanoat
etil metanoat
metil metanoat
metil etanoik
etil butanoat
8.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Nama ester tersebut adalah
metil metanoat
etil etanoat
metil metilat
metil pentanoat
etil etanoat
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