A mixture of hundred meter mol ca(OH)2 and 2g of sodium sulphate was dissolved in water and the volume was made up to 100 ML. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are :
(Molar mass of ca(
, 
and 
are 74, 143 and 136 g mol–1 respectively ; 
of Ca(
is 5.5
)
(a)
1.9 g, 0.14 mol 
(b)
13.6 g, 0.14 mol 
(c)
1.9 g, 0.28 mol 
(d)
13.6 g, 0.28 mol 
A mixture of hundred meter mol ca(OH)2 and 2g of sodium sulphate was dissolved in water and the volume was made up to 100 ML. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are :
(Molar mass of ca( , and are 74, 143 and 136 g mol–1 respectively ; of Ca( is 5.5 )
(a)
1.9 g, 0.14 mol
(b)
13.6 g, 0.14 mol
(c)
1.9 g, 0.28 mol
(d)
13.6 g, 0.28 mol
Question ID - 52176 | SaraNextGen Top Answer
A mixture of hundred meter mol ca(OH)2 and 2g of sodium sulphate was dissolved in water and the volume was made up to 100 ML. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are :
(Molar mass of ca( , and are 74, 143 and 136 g mol–1 respectively ; of Ca( is 5.5 )
(a)
1.9 g, 0.14 mol
(b)
13.6 g, 0.14 mol
(c)
1.9 g, 0.28 mol
(d)
13.6 g, 0.28 mol
|
A mixture of hundred meter mol ca(OH)2 and 2g of sodium sulphate was dissolved in water and the volume was made up to 100 ML. The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively, are : (Molar mass of ca( |
|||
|
(a) |
1.9 g, 0.14 mol |
(b) |
13.6 g, 0.14 mol |
|
(c) |
1.9 g, 0.28 mol |
(d) |
13.6 g, 0.28 mol |
Ca(OH)2 + 
+2NaOH
100 m mol 14 m mol – –
– – 14 m mol 28 m mol
=14
136=1.9gm
[
]=
=0.28M