16)
option E
MOLAR SOLUBILITY GIVEN = 0.0001 mol/L
Molar mass = 240 g/mol
the solubilty of salt in grams/L = 240 g * 0.0001 mol
= 0.0240 g
0.0240 g of salt is dissolved in 1 liter of water.
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17)
option A
pH is the negative logarthim of hydrogen ion concentration.
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18)
option A
The dirt is non volatile solute.
lauric acid is pure solvent
when dirt is added to pure solvent like lauric acid here , there will be a change in COLLIGATIVE PROPERTY. The freezing point is depressed.
The freezing point is lowered.
The freezin gpoint of contaminated lauric acid will be lower than that of pure lauric acid.
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19) option C
pH is the negative logarthim of hydrogen ion concentration.
So,
But ionic product of water , Kw =
But,
=
ANSWER ALL QUESTIONS!! 16 A certain salt has a molar solubility of 1.0X 104 moles/liter. The...