You are on your dream vacation at the beach when a major storm knocks out the power for days. Your cell phone is dead, and you want to make a battery to charge it. You find the following materials in the beach house. blue Stone algaecide for pools, which can be used to make a 1.0 M Cu 2+ solution alum in the kitchen, which can be used to make a 1.0 M Al 3+ solution aluminum foil, copper wire, and bologna, which can be used as a salt bridge (a) What are the half reactions and overall reaction in the battery? (b) What voltage can be generated? (c) Draw a diagram using beakers, a voItmeter, and salt bridge to show how a battery can be constructed. Label the anode, cathode, and direction of electron flow. (d) An iPhone requires 5.0 V for charging. Can this battery charge the phone? Explain.
You are on your dream vacation at the beach when a major storm knocks out the power for days. Your cell phone is dead, and you want to make a battery to charge it. You find the following materials in the beach house. blue Stone algaecide for pools, which can be used to make a 1.0 M Cu 2+ solution alum in the kitchen, which can be used to make a 1.0 M Al 3+ solution aluminum foil, copper wire, and bologna, which can be used as a salt bridge (a) What are the half reactions and overall reaction in the battery? (b) What voltage can be generated? (c) Draw a diagram using beakers, a voItmeter, and salt bridge to show how a battery can be constructed. Label the anode, cathode, and direction of electron flow. (d) An iPhone requires 5.0 V for charging. Can this battery charge the phone? Explain.
Solution Summary: The author explains how the reaction at each electrode is known as half-reaction. The standard cell potential for an electrochemical cell can be calculated using the Nernst equation.
You are on your dream vacation at the beach when a major storm knocks out the power for days. Your cell phone is dead, and you want to make a battery to charge it. You find the following materials in the beach house. blue Stone algaecide for pools, which can be used to make a
1.0
M Cu
2+
solution alum in the kitchen, which can be used to make a
1.0
M Al
3+
solution aluminum foil, copper wire, and bologna, which can be used as a salt bridge (a) What are the half reactions and overall reaction in the battery? (b) What voltage can be generated? (c) Draw a diagram using beakers, a voItmeter, and salt bridge to show how a battery can be constructed. Label the anode, cathode, and direction of electron flow. (d) An iPhone requires 5.0 V for charging. Can this battery charge the phone? Explain.
Draw structures of the following compounds and identify their role:
mCPBA
(MCPBA)
DMS
Py
9-BBN
LAH
Sia₂BH
TsCI
PCC
t-BuOK
LDA
MeLi
n-BuLi
DMSO
DMF
Sodium Borohydride
Lithium DiisopropylAmide
2
Using Luther's rule, calculate the reference potential of the Hg2+/Hg redox electrode.
DATA: Electrode potentials E° = 0,854 V y E 0,788 V
Hg2+/Hg
2+
Hg2/Hg
1) NaNH2 (excess)
1) NaNH2
CI CI
2) H₂O
2) Mel
1) 03
2) (CH3)2S
Na
NH3 (liquid)
1
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