1) Complete the table given below:
So.
Salt
PH
Acid used l Base used
H.CO,
KOH
Camily
Na SO,
Chloride
Chloride
Q2) Plaster of Paris should be stored in moisture proof container. Explain why?
Q3) In a laundry a white substance having a strong smell of chlorine is used to remove
white clothes Identify the substance. How is it prepared? What are its
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ans2--- Plaster of Paris should be stored in a moisture-proof container. ... Answer: The Plaster of Paris should be stored in a moisture-proof container as it absorbs water from moisture and turn into hard substance (Gypsum)
ans-3-- The white powder used for disinfecting water is bleaching powder. 1) Its chemical name is calcium oxychloride (CaOCl2). 3) When exposed to air, bleaching powder reacts with carbon dioxide in the air and releases chlorine gas.
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