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Lesson 5: Hydrocarbon Derivatives – Alcohols and Phenols — Picture questions (exam style)

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1.
Starting from 28 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
Starting from 28 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
mass of CH₃COOC₂H₅ = 28.1 g, overall yield = 68.3%
mass of CH₃COOC₂H₅ = 28.1 g, overall yield = 31.5%
mass of CH₃COOC₂H₅ = 16.9 g, overall yield = 31.5%
mass of CH₃COOC₂H₅ = 16.9 g, overall yield = 60%
2.
What organic product forms when the alcohol shown is oxidised by acidified potassium dichromate, distilling off immediately?
What organic product forms when the alcohol shown is oxidised by acidified potassium dichromate, distilling off immediately?
pentan-3-one
butanal
ethanal
pentanal
3.
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
0.441 g
0.882 g
1.15 g
1.76 g
4.
1.5 g of the alcohol shown (cyclohexanol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
1.5 g of the alcohol shown (cyclohexanol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.336 L
0.0840 L
0.365 L
0.168 L
5.
What volume of alkene (STP) forms when 12 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 12 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
3.63 L
1.82 L
7.26 L
5.84 L
6.
What volume of alkene (STP) forms when 2.3 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 2.3 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.12 L
1.01 L
0.505 L
0.253 L
7.
2.3 g of the alcohol shown (2-methylpropan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
2.3 g of the alcohol shown (2-methylpropan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.696 L
0.348 L
0.174 L
0.560 L
8.
What volume of alkene (STP) forms when 3.0 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 3.0 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
0.764 L
1.46 L
0.382 L
1.53 L
9.
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.80 L
7.21 L
6.27 L
3.60 L
10.
What mass of sodium reacts exactly with 12 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 12 g of the alcohol shown? (Na = 23)
6.27 g
1.57 g
3.14 g
6.00 g
11.
Starting from 15.6 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
Starting from 15.6 g of C₂H₅OH in the sequence shown (yield of each step on its arrow, molar masses in brackets). Which option is correct?
mass of C₂H₄(OH)₂ = 21 g, overall yield = 55%
mass of C₂H₄(OH)₂ = 7.02 g, overall yield = 50%
mass of C₂H₄(OH)₂ = 9.46 g, overall yield = 45%
mass of C₂H₄(OH)₂ = 18.9 g, overall yield = 70%
12.
What mass of sodium reacts exactly with 4.6 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 4.6 g of the alcohol shown? (Na = 23)
1.76 g
3.53 g
2.30 g
0.882 g
13.
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
What volume of alkene (STP) forms when 7.4 g of the alcohol shown is dehydrated with conc. H₂SO₄ at 180 °C?
1.88 L
3.77 L
3.60 L
0.942 L
14.
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
What mass of sodium reacts exactly with 2.3 g of the alcohol shown? (Na = 23)
1.15 g
0.357 g
1.43 g
0.715 g
15.
1.5 g of the alcohol shown (pentan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
1.5 g of the alcohol shown (pentan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
0.365 L
0.382 L
0.191 L
0.0955 L
16.
30 g of the alcohol shown (3-methylbutan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
30 g of the alcohol shown (3-methylbutan-2-ol) reacts with excess sodium. What volume of H₂ (STP) is evolved?
7.30 L
7.64 L
1.91 L
3.82 L
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