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Chapter 1 - Transition Elements and Iron Metallurgy

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Chapter 2 - Chemical Analysis

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Chapter 3 - Chemical Equilibrium

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Chapter 4 - Electrochemistry

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Chapter 5 - Organic Chemistry

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Lesson 4 Quiz: Iron Chemical Properties, Reactions and Oxides

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  • Questions count: 20
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1.
STEM Electrochemistry Problem 9: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+1.10 V (spontaneous galvanic cell)
+0.42 V
-1.10 V (electrolytic cell)
+0.58 V
2.
STEM Electrochemistry Problem 32: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+0.42 V
+0.58 V
+1.10 V (spontaneous galvanic cell)
-1.10 V (electrolytic cell)
3.
STEM Organic Chemistry Problem 33: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
Acetic acid (Ethanoic acid) directly
Ethyl alcohol (Ethanol) directly in one step
Ethylene glycol through addition
4.
STEM Electrochemistry Problem 2: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+0.42 V
+1.10 V (spontaneous galvanic cell)
+0.58 V
-1.10 V (electrolytic cell)
5.
STEM Organic Chemistry Problem 35: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Ethylene glycol through addition
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
Ethyl alcohol (Ethanol) directly in one step
Acetic acid (Ethanoic acid) directly
6.
STEM Chemical Equilibrium Problem 27: For the equilibrium reaction: N2(g) + 3 H2(g) 2 NH3(g) (ΔH = -92 kJ/mol), which change will shift the equilibrium to the right and increase ammonia yield?
Decreasing temperature and increasing total pressure
Adding a positive catalyst at constant volume
Removing nitrogen gas continuously from the chamber
Increasing temperature and decreasing pressure
7.
STEM Organic Chemistry Problem 31: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Ethyl alcohol (Ethanol) directly in one step
Ethylene glycol through addition
Acetic acid (Ethanoic acid) directly
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
8.
STEM Electrochemistry Problem 18: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+1.10 V (spontaneous galvanic cell)
-1.10 V (electrolytic cell)
+0.58 V
+0.42 V
9.
STEM Electrochemistry Problem 5: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+1.10 V (spontaneous galvanic cell)
-1.10 V (electrolytic cell)
+0.58 V
+0.42 V
10.
STEM Organic Chemistry Problem 16: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Acetic acid (Ethanoic acid) directly
Ethylene glycol through addition
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
Ethyl alcohol (Ethanol) directly in one step
11.
STEM Chemical Equilibrium Problem 41: For the equilibrium reaction: N2(g) + 3 H2(g) 2 NH3(g) (ΔH = -92 kJ/mol), which change will shift the equilibrium to the right and increase ammonia yield?
Increasing temperature and decreasing pressure
Removing nitrogen gas continuously from the chamber
Adding a positive catalyst at constant volume
Decreasing temperature and increasing total pressure
12.
STEM Electrochemistry Problem 35: In a Daniell cell, Zn | Zn2+ (1 M) || Cu2+ (1 M) | Cu, given E°(Zn2+/Zn) = -0.76 V and E°(Cu2+/Cu) = +0.34 V, what is the standard electromotive force (E°cell)?
+1.10 V (spontaneous galvanic cell)
-1.10 V (electrolytic cell)
+0.58 V
+0.42 V
13.
What is the exact chemical deduction according to Egyptian curriculum standards for: Standard Hydrogen Electrode (SHE) and Galvanic Cells?
SHE can only act as an anode and never as a cathode
SHE has an arbitrarily defined standard potential E° = 0.00 V under standard conditions (1 atm H2 gas, 1.0 M H+ solution, 298 K)
SHE potential changes to 1.00 V when connected to Zinc
The standard hydrogen electrode uses pure copper wire without platinum black
14.
STEM Organic Distinction Problem 29: How can you chemically distinguish between phenol (C6H5OH) and ethanol (C2H5OH) using a simple qualitative test?
Adding sodium metal: only ethanol reacts with sodium
Adding litmus paper: ethanol turns blue litmus red
Heating with concentrated sulfuric acid at 180°C
Adding neutral FeCl3 solution: phenol produces a distinct violet color, whereas ethanol shows no change
15.
STEM Organic Distinction Problem 3: How can you chemically distinguish between phenol (C6H5OH) and ethanol (C2H5OH) using a simple qualitative test?
Heating with concentrated sulfuric acid at 180°C
Adding neutral FeCl3 solution: phenol produces a distinct violet color, whereas ethanol shows no change
Adding sodium metal: only ethanol reacts with sodium
Adding litmus paper: ethanol turns blue litmus red
16.
STEM Chemical Equilibrium Problem 26: For the equilibrium reaction: N2(g) + 3 H2(g) 2 NH3(g) (ΔH = -92 kJ/mol), which change will shift the equilibrium to the right and increase ammonia yield?
Decreasing temperature and increasing total pressure
Adding a positive catalyst at constant volume
Increasing temperature and decreasing pressure
Removing nitrogen gas continuously from the chamber
17.
STEM Organic Chemistry Problem 14: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Ethyl alcohol (Ethanol) directly in one step
Ethylene glycol through addition
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
Acetic acid (Ethanoic acid) directly
18.
STEM Organic Chemistry Problem 38: Catalytic hydration of acetylene (ethyne, C2H2) with H2O in the presence of 40% H2SO4 and 1% HgSO4 at 60°C yields which intermediate and final product?
Ethyl alcohol (Ethanol) directly in one step
Acetic acid (Ethanoic acid) directly
Ethylene glycol through addition
Unstable vinyl alcohol intermediate that tautomerizes to Acetaldehyde (Ethanal, CH3CHO)
19.
STEM Organic Distinction Problem 1: How can you chemically distinguish between phenol (C6H5OH) and ethanol (C2H5OH) using a simple qualitative test?
Adding neutral FeCl3 solution: phenol produces a distinct violet color, whereas ethanol shows no change
Heating with concentrated sulfuric acid at 180°C
Adding litmus paper: ethanol turns blue litmus red
Adding sodium metal: only ethanol reacts with sodium
20.
STEM Chemical Equilibrium Problem 16: For the equilibrium reaction: N2(g) + 3 H2(g) 2 NH3(g) (ΔH = -92 kJ/mol), which change will shift the equilibrium to the right and increase ammonia yield?
Removing nitrogen gas continuously from the chamber
Decreasing temperature and increasing total pressure
Increasing temperature and decreasing pressure
Adding a positive catalyst at constant volume
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