Advertisements
Advertisements
प्रश्न
Give the names and formulae of two substances.
Hydrated substance
Advertisements
उत्तर
Washing soda crystals: Na2CO3.10H2O
Blue vitriol: CuSO4.5 H2O
APPEARS IN
संबंधित प्रश्न
Give two examples of Crystalline anhydrous substances.
What do you observe when Blue vitriol is heated?
Give one word for the following statement:
Water molecules in loose chemical combination with other substances.
Give the names and formulae of two substances
Anhydrous substance
Differentiate between ‘hydrated’ & ‘anhydrous’ crystals. Give the chemical formula of – the following hydrated crystals -
(a) Washing soda
(b) Gypsum
(c) Blue vitriol
(d) Epsom salt
(e) Glauber’s salt.
State which crystal from (a) to (e) is a pentahydrate.
Differentiate the function of concentrated sulphuric acid as a drying agent & as a dehydrating agent. Is fused calcium chloride a dehydrating or a desiccating agent. Give reasons.
Complete the statement by filling the blank with the correct word from the option.
Hygroscopic substance absorb moisture from the atmosphere & _______their original state.
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
Define Hydrated salt.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
