86.70g of hydrogen chloride hcl produced when 26 l of molecular hydrogen h2 reaction with 39 l of molecular chlorine cl2 at stp.
Solution:
PV = nRT
n = PV/RT
n(H2)/n(Cl2) = V(H2)/V(Cl2)
1:2 mole ratio between hydrogen gas and hydrogen chloride.
Using the volume ratio
26l H2 gives 54l HCl
54l HCl = 54/22.7 = 2.378moles HCl
2.378 moles HCl * 36.461 = 86.70g
The mole, represented by the symbol mol, is the fundamental SI unit of material quantity. The amount of a substance determines how many elementary entities of that substance are present in an object or sample. Since the SI fundamental units were revised in 2019, the mole is now exactly defined as 6.022140761023.
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