Advertisements
Advertisements
Question
Calculate the percentage composition of calcium chloride.
[Ca = 40, Cl = 35.5]
Advertisements
Solution
Percentage composition of calcium chloride [CaCl2]
Molecular mass of CaCl2 = Ca + 2[Cl]
= 40 + 2[35.5]
= 40 + 71
= 111
% of Ca = `"Mass of calcium"/"Molecular mass" xx 100`
`=40/111 xx 100`
= 36.04%
% of chlorine = `"Mass of Cl"_2/"Molecular mass of CaCl"_2 xx 100`
`= 71/111 xx 100`
= 63.96%
Or % of Cl2 = 100 - 36.04 = 63.96%
APPEARS IN
RELATED QUESTIONS
Calculate the percentage of nitrogen and oxygen in ammonium nitrate. [Relative molecular mass of ammonium nitrate is 80, H = 1, N = 14, O = 16].
Calculate the percentage of phosphorus in calcium hydrogen phosphate Ca(H2PO4)2 .
Calculate the percentage of phosphorus in calcium phosphate Ca3(PO4)2.
Calculate the percentage of phosphorus in Calcium phosphate Ca3(PO4)2
Find the percentage of boron in Na2B4O7.10H2O. [H = 1, B = 11, O = 16, Na = 23].
10 g of a mixture of sodium chloride and anhydrous sodium sulphate is dissolved in water. An excess of barium chloride solution is added and 6.99 g of barium sulphate is precipitated according to the equation given below:
\[\ce{Na2SO4 + BaCl2 -> BaSO4 + 2NaCl}\]
Calculate the percentage of sodium sulphate in the original mixture.
Find the percentage of nitrogen in ammonia.
60 g of a compound on analysis gave 24 g C, 4 g H and 32 g O. The empirical formula of the compound is ______.
Empirical formula of Ethyne.
Find the total percentage of Magnesium in magnesium nitrate crystals, Mg(NO3)2.6H2O.
[Mg = 24, N = 14, O = 16 and H = 1]
