Alkalinity is important in aquatic life because a : It helps water to remain warm b : It helps water to remain cold c : It buffers against rapid pH change d : None of the above
Adv.
c : It buffers against rapid pH change
An alkalinity test measures the level of a : Carbonates only b : Hydroxides only c : Bicarbonates, carbonates, and hydroxides d : None of the above
Higher is the alkalinity in water easier it is for pH change. a : False b : True
Excessive alkalinity level in human body can a : Expel the unwanted pathogens in the bloodstream b : Cause skin irritations c : Lead to gastrointestinal issues d : All of the above
Data obtained from alkalinity is used for following engineering practices. a : Chemical coagulation of water and waste water b : Water softening c : Corrosion control d : All of the above
Majority of mineral water supplied is mostly a : Acidic b : Neutral c : Alkaline d : None of the above
Alkalinity measurements are used in the interpretation and control of waste water treatment process. a : False b : True
Why does the procedure call for a sample containing no more than 60 mg of Mg2+?
Why is the solution acidified with HCl before adding the precipitant?
Why is the acid–base indicator methyl red added to the solution?
Explain why forming Mg(PO3)2 instead of Mg2P2O7 increases the precipitate’s mass.
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