answer the 21 question..plz...
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1) when electricity is passed through an aqueous solution of Brian (NaCi), sodium hydroxide is formed alone with liberation
2)when copper sulphate is heated for some time,the blue colour disappears and it becomes white -gray in colour
3) the following reaction takes place:
Ca(OH)+CO2(g)>>>>>>>>>CACO3(s)+ H2O ( I) where the Ca (OH) 2 is lime water
4) Nahco3(aq) + HCI(aq)-NaCI(aq)+co2(g) + H2O(I)
5)the product ZNSO4 and H2 entirely in chemical composition
6) Sodium hydrogen cardboard man has sodium bicarbonate or because bonnet of soda has the chemical formula and Nahco3 .
7) when chlorine is passed through dry scaly lime bleched powder is uobtained
8)on heating gypsm at 373k it loses water molecules and becomes calcium sulphate
9) chemical name of plaster of Paris is calcium sulphate hemihydrate because half molecule of water is attached with calcium sulphate
10) Co2 gas is passed through lime water it turns milky due to the formation of calcium carbonate which formula is CaCo3
hope it helps u
2)when copper sulphate is heated for some time,the blue colour disappears and it becomes white -gray in colour
3) the following reaction takes place:
Ca(OH)+CO2(g)>>>>>>>>>CACO3(s)+ H2O ( I) where the Ca (OH) 2 is lime water
4) Nahco3(aq) + HCI(aq)-NaCI(aq)+co2(g) + H2O(I)
5)the product ZNSO4 and H2 entirely in chemical composition
6) Sodium hydrogen cardboard man has sodium bicarbonate or because bonnet of soda has the chemical formula and Nahco3 .
7) when chlorine is passed through dry scaly lime bleched powder is uobtained
8)on heating gypsm at 373k it loses water molecules and becomes calcium sulphate
9) chemical name of plaster of Paris is calcium sulphate hemihydrate because half molecule of water is attached with calcium sulphate
10) Co2 gas is passed through lime water it turns milky due to the formation of calcium carbonate which formula is CaCo3
hope it helps u
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