## Saturday, November 4, 2023

If you're tired of buying batteries, this is the circuit you need

In the section “Predicting the direction of the spontaneous evolution of a chemical system”

CRITERION OF SPONTANEOUS EVOLUTION of a system out of chemical equilibrium. Q less than K

(Reaction quotient Q less than the equilibrium constant K = direct direction)

SPONTANEOUS transformation modeled by a redox reaction.

Battery, half-cells, salt bridge or membrane, no-load voltage.

How a battery works; electrochemical reactions at the electrodes.

Wear of a battery, electrical capacity of a battery.

Usual oxidants and reducers.

Justify the strategy of separating the reagents in two half-piles and the use of a salt bridge.

Model and diagram, based on experimental results, the operation of a battery.

Determine the electrical capacity of a battery based on its initial constitution.

Create a battery, determine its no-load voltage and the polarity of the electrodes, identify the transformation involved, illustrate the role of the salt bridge.

What the video does not say: Name common oxidants and reducers: bleach, dioxygen, dichlor, ascorbic acid, dihydrogen, metals.

Justify the reductive nature of block s metals.

If you're tired of buying batteries, this is the circuit you need

In the section “Predicting the direction of the spontaneous evolution of a chemical system”

CRITERION OF SPONTANEOUS EVOLUTION of a system out of chemical equilibrium. Q less than K

(Reaction quotient Q less than the equilibrium constant K = direct direction)

SPONTANEOUS transformation modeled by a redox reaction.

Battery, half-cells, salt bridge or membrane, no-load voltage.

How a battery works; electrochemical reactions at the electrodes.

Wear of a battery, electrical capacity of a battery.

Usual oxidants and reducers.

Justify the strategy of separating the reagents in two half-piles and the use of a salt bridge.

Model and diagram, based on experimental results, the operation of a battery.

Determine the electrical capacity of a battery based on its initial constitution.

Create a battery, determine its no-load voltage and the polarity of the electrodes, identify the transformation involved, illustrate the role of the salt bridge.

What the video does not say: Name common oxidants and reducers: bleach, dioxygen, dichlor, ascorbic acid, dihydrogen, metals.

Justify the reductive nature of block s metals.