Please solve these questions.
Asked by anam.asfia99
3rd November 2018,
11:43 AM
Answered by Expert
Answer:
28. The reaction is given by
BaCl2.xH2O → BaCl2 + xH2O
1.763g 1.505g 0.258g
Comparing the number of moles of hydrate and anhydrate we get
{1.763/208+18x} = {1.505/208}
or, 0.265 = 0.129x so, x = 2
thus the formula for hydrate is C.
29. The reaction is
N2 + 3H2 → 2NH3
Thus if i assume nitrogen is complted i.e its 1 mole is complete so the total number of moles = 3 moles = 84g
and similarly for hydrogen total moles = 5 moles = 10g
so, option b is correct.
30. The stoichiometric coefficients actually represents the number of moles so, option a is correct.
Answered by Expert
5th November 2018,
3:07 PM
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