Which combination of factors would MOST effectively enhance the cleansing action of a soap in hard water?
Decreased temperature and addition of NaCl
Increased temperature and addition of NaCl
Decreased temperature and addition of a chelating agent
Increased temperature and addition of a chelating agent
Related Questions
Spermaceti is commonly used in:
Fermentation of cane sugar
Preparation of acetic acid
Birth control
Cosmetics and soaps
Washing soaps are potassium and sodium salts of:
Formic , acetic, and maleic acid
Oleic, palmitic and stearic acid
Sulphur, chlorine and fluorine
Acetone, ketone and quinones
Soaps do not form froths easily from hard water because:
Of formation of insoluble salts
Of formation of complex salts
Of lower solubility of soaps in hard water
None of the above
Which of the following is NOT a characteristic of soaps?
They are sodium or potassium salts of long-chain fatty acids.
They work effectively in hard water.
They have a hydrophilic head and a hydrophobic tail.
They form micelles in water.
A detergent is a:
Cleansing agent
Drug
Catalyst
Soap
Which statement regarding cationic detergents is FALSE?
They possess a positively charged hydrophilic head group.
They are often used as fabric softeners and germicides.
They are effective cleaning agents in hard water due to their insensitivity to calcium and magnesium ions.
Their effectiveness is reduced by anionic surfactants.
The process of making soap is called:
Esterification
Saponification
Hydrogenation
Polymerization
Which of the following detergents possesses a positively charged hydrophilic head?
Sulfonates
Quaternary ammonium compounds
Ethylene oxide condensates
Carboxylates
Surfactants and detergents have the same common property of……in them.
Detergency
Surface activity
Viscosity
None of these
The process of forming micelles is driven by:
Hydrogen bonding.
Ionic interactions.
The hydrophobic effect.
Van der Waals forces.
