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Questions and Answers
What is the main purpose of a wetting agent?
What is the main purpose of a wetting agent?
- To change the color of water
- To reduce the surface tension of water (correct)
- To make water more dense
- To increase the surface tension of water
What is the surface tension of pure water at 20°C?
What is the surface tension of pure water at 20°C?
- 72.8 mN/m (correct)
- 60.0 mN/m
- 70.0 mN/m
- 80.0 mN/m
What is the effect of wetting agents on the penetration of dyes into a substrate?
What is the effect of wetting agents on the penetration of dyes into a substrate?
- They have no effect on the penetration of dyes
- They change the color of the dyes
- They make it easier for dyes to penetrate (correct)
- They make it more difficult for dyes to penetrate
What is the primary function of wetting agents in wet processing?
What is the primary function of wetting agents in wet processing?
What is the function of the hydrophobic tail of a wetting agent molecule?
What is the function of the hydrophobic tail of a wetting agent molecule?
Wetting agents are used to increase the surface tension of water.
Wetting agents are used to increase the surface tension of water.
Wetting agents are molecules with a hydrophilic head and a hydrophobic tail.
Wetting agents are molecules with a hydrophilic head and a hydrophobic tail.
Wetting agents are primarily used in wet processing to accelerate the drying of materials.
Wetting agents are primarily used in wet processing to accelerate the drying of materials.
The surface tension of pure water is around 50 mN/m at 20 °C.
The surface tension of pure water is around 50 mN/m at 20 °C.
Wetting agents help water-based solutions to spread and penetrate surfaces more easily.
Wetting agents help water-based solutions to spread and penetrate surfaces more easily.
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