Question

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1. The adsorbed ions comprising the Stern layer around a charged particle have the same charge...

1. The adsorbed ions comprising the Stern layer around a charged particle have the same charge (positive or negative) as the particle itself.

True.

False, they have the opposite charge.

False, there are an equal number of positively and negatively charged ions in the Stern layer.

2. Both ionic and nonionic surfactants can stabilize colloidal dispersions by adsorbing onto particle surfaces.

True.

False, nonionic surfactants do not adsorb on particle surfaces.

False, surfactant adsorption always destabilizes colloidal dispersions by reducing the charge on the particles.

Solutions

Expert Solution

1.False ,They have the opposite charge in stern layer according to double layer theory.

2.True, Both ionic and nonionic surfactants can stabilize colloidal dispersions by adsorbing onto particle surfaces. Nonionic is more efficient.

1.False ,They have the opposite charge in stern layer according to double layer theory.

2.True, Both ionic and nonionic surfactants can stabilize colloidal dispersions by adsorbing onto particle surfaces.Nonionic is more efficient.

1.False ,They have the opposite charge in stern layer according to double layer theory.

2.True, Both ionic and nonionic surfactants can stabilize colloidal dispersions by adsorbing onto particle surfaces.Nonionic is more efficient.

Amanda K answered 2 years ago
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