2) For each of the following complex metal ions draw the d-orbital splitting diagram and determine whether they diamagnetic or paramagnetic, the number of unpaired electrons (n)
and spin quantum number (S).
a Fe2+ (octahedral, HS and LS)
b)
Fe3+ (octahedral HS)
c)
d)
Zn2+(octahedral strong field and weak field)
[Ru(NH3).]2+ (LS)
[CoC14] (tetrahedral)
always
high
because so is
Sinan
spin

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2