Sahani Kumar
Last Activity: 6 Years ago
Mass of the CaCl2 = 10gram
Molecular mass of cacl2=40 + (2*(35.5))=111
Vant Hoff factor for CaCl2 = 3 (because CaCl2. dissociate into 3 particle.)
Now,
Number of moles
of CaCl2 = (mass of CaCl2) /
( Molecular mass of CaCl2)
So number of moles if CaCl2 = 10/111=0.09
Volume of water = 300g which is = 300ml or 0.3L
Now finally
Molarity =[ (Vant Hoff factor)*(number of moles)]/ [Volume]
Molarity= [(3)*(0.09)]/[0.3] = 0.9
Molarity = 0.9
Regards
Askiitian member
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