117.0g of sodium chloride was dissolved in 1.0dm3 of distilled water at 25°C. Determine the solubility in mol dm-3 of sodium chloride at that temperature
[Na = 23, Cl = 35.5]
a
1.0
b
2.0
c
3.0
d
4.0
Explanation
Correct Option
bVideo Explanation
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Discussions (9)
tyjesma
11 years ago
Sol=n • Stnd vol(1000cm³)/ volume...n =m/Mm, thErefore sol=mx1000/Mm x volume...m=117.0g, Mm Of (NaCl)=58.5, Volume=1dm³------»1000cm³...sol=117.0 x 1000/58.5 x 1000= 2.0
Anela
1 year ago
m/mm× v/1000
THE VOLUME GIVEN IN THE QUESTION IS ALREADY IN dm³ SO I WON'T DIVIDE BY 1000
mm of NaCl= 35.5+23
= 58.5
sol. = 117/58.5 × 1
= 2×1
= 2(ANS)
