Diagram 1 shows the structural formula of an organic compound. Which of the following is not the property of this compound?
Rajah 1 menunjukkan formula struktur satu sebatian organik. Antara berikut, yang manakah bukan sifat sebatian ini?
F5 CHEMISTRY QUIZ 2_6 ESTER
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11th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diagram 1 shows the structural formula of an organic compound. Which of the following is not the property of this compound?
Rajah 1 menunjukkan formula struktur satu sebatian organik. Antara berikut, yang manakah bukan sifat sebatian ini?
soluble in water
terlarut campur dalam air
has a fragrant smell
mempunyai bau wangi
less dense than water
kurang tumpat daripada air
neutral and do not conducts electricity
neutral dan tidak mengkonduksi elektrik
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diagram 2 shows the structural formula of an ester. What is the name of this ester?
Rajah 2 menunjukkan formula struktur satu ester. Apakah nama ester ini?
methyl propanoate
metil propanoat
ethyl propanoate
etil propanoat
propyl ethanoate
propil etanoat
butyl ethanoate
butil etanoat
3.
MULTIPLE CHOICE QUESTION
1 min • 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
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Butan-1-ol reacts with ethanoic acid to produce
Butan-1-ol bertindak balas dengan asid etanoik menghasilkan
CH3COOC4H9
C2H5COOC4H9
C3H7COOC2H5
C4H9COOC4H9
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is the correct apparatus set-up for the preparation of an ester?
Antara berikut, yang manakah susunan radas yang betul untuk penyediaan suatu ester?
6.
MULTIPLE CHOICE QUESTION
1 min • 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 CHOICE QUESTION
1 min • 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
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