pls sove questions 11, 12. 15 and 16
Attachments:
Answers
Answered by
1
Explanation:
16)
Na2SO4.xH2O
Molar mass of salt=2*23+32+16*4+x*18
=142+18x
55.9% mass of H2O in salt.
mass by mass=mass/molar mass of
compound*100
Mass of H3O=18u
55.9=18x/142+18x*100
55.9(142+18x)=1800x
7937.8+1006.2x=1800x
x=9.99
x=10(approx.)
Molecular formula=Na2SO4.10H2O
Attachments:
Similar questions