1502998
Description
Mind Map by chantel.evans10, updated more than 1 year ago
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Created by chantel.evans10
over 9 years ago
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Electrolysis
- Electrolysis is the breaking down of
a compound using electrical energy.
- The electricity used comes form a d.c (direct current) source, such as a battery.
- It requires a liquid to conduct the electricity, called the electrolyte.
- The compound is found in the electrolyte. The
compound is broken down into componant parts.
- You can Electrolyse Hydrochloric Acid
- The electrolyte is a dilute solution of
Hydrochloric Acid.
- Applying a direct current to the electrolyte causes the hydrochloric
acid to decompose into its two component parts.
- Hydrogen Gas
- Testing for Hydrogen: Hydrogen makes a "squeaky pop" with a lighted splint (The
sound comes from the Hydrogen burning with Oxygen in the air to form H2O.
- Testing for Hydrogen: Hydrogen makes a "squeaky pop" with a lighted splint (The
sound comes from the Hydrogen burning with Oxygen in the air to form H2O.
- Chlorine Gas
- Testing for Chlorine: Chlorine bleaches damp litmus paper, turning it white. (It may
turn red for a moment first through - that's because a solution of chlorine is acidic.)
- Testing for Chlorine: Chlorine bleaches damp litmus paper, turning it white. (It may
turn red for a moment first through - that's because a solution of chlorine is acidic.)
- Hydrogen Gas
- Applying a direct current to the electrolyte causes the hydrochloric
acid to decompose into its two component parts.
- The electrolyte is a dilute solution of
Hydrochloric Acid.
- Electrolysis of Salt produces Chlorine
- Sea Water or brine (sodium chloride solution) can be decomposed by electrlysis.
- This is a great way to make chlorine gas.
- Chlorine gas is toxic - so this makes the
manufacture of it a hazardous process.
- There are 3 main uses of chlorine.
- 1. It is used to treat water supplies - it kills bacteria and
other micro-organisms making the water safe to drink.
- 2. It is needed in the manufacture of bleach.
- 3. It is used to make the polymer poly(chloroethene) - PVC
- 1. It is used to treat water supplies - it kills bacteria and
other micro-organisms making the water safe to drink.
- This is a great way to make chlorine gas.
- Sea Water or brine (sodium chloride solution) can be decomposed by electrlysis.
- Electrolysis of water gives you Hydrogen and Oxygen
- When water is decomposed it gives two components.
- Hydrogen Gas
- Testing for Hydrogen: Hydrogen makes a "squeaky pop" with a lighted splint (The
sound comes from the Hydrogen burning with Oxygen in the air to form H2O.
- Testing for Hydrogen: Hydrogen makes a "squeaky pop" with a lighted splint (The
sound comes from the Hydrogen burning with Oxygen in the air to form H2O.
- Oxygen Gas
- Testing for Oxygen: You check for Oxygen by
checking if the gas relights a glowing splint.
- Testing for Oxygen: You check for Oxygen by
checking if the gas relights a glowing splint.
- Hydrogen Gas
- When water is decomposed it gives two components.
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