[Fish200398]

I have 0.1 mol oleic acid, how many mol H2 i need to saturate it completely?
From the structure of oleic acid i see 2 double bond, i thought hydrogen that is needed is twice as much as oleic acid, thus 0.2 mol. But it is wrong. Why? How much do i need? And how to know how much do i need to saturate fat generally?

[AWK]

Are you sure you were looking at the right acid?

[Fish200398]

The original question is :
H2 is added to 0.1 mol of fat contains only oleic acid c18h34o2 as the fatty acid compound. How much hydrogen (in L) STP is needed to saturate the fat completely.

[AWK]

Compare formulas of stearic (saturated fatty acid) and oleic acids.

[Fish200398]

Oleic acid formula is c18h34o2.
Stereic acid is c18h36o2. But still, i dont really get it? Stereic is stereic, not oleic?

[AWK]

Stearic -36 hydrogen atoms, oleic 34 hydrogen atoms.

[Fish200398]

Yes. But the answer is not 0.1 mol H2... ?

[AWK]

May be 2.24 Liter?

[Fish200398]

I just recheck the answer.. yes.. 2.24 L.. thanks