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is 118 percent labelled in caseof problem of oleum means in 100 gm water 118 h2s04 obtained

is 118 percent labelled in caseof problem of oleum means in 100 gm water 118 h2s04 obtained

Grade:11

1 Answers

Suraj Prasad IIT Patna
askIITians Faculty 286 Points
9 years ago
Oleum (Latin oleum = "oil"), or fuming sulfuric acid, is a solution of various compositions of sulfur trioxide in sulfuric acid, or sometimes more specifically to disulfuric acid (also known as pyrosulfuric acid).

Oleums can be described by the formula ySO3.H2O where y is the total molar sulfur trioxide content. The value of y can be varied, to include different oleums. They can also be described by the formula H2SO4.xSO3 where x is now defined as the molar free sulfur trioxide content. Oleum is generally assayed according to the free SO3 content by weight. It can also be expressed as a percentage of sulfuric acid strength; for oleum concentrations, that would be over 100%. For example, 10% oleum can also be expressed as H2SO4.0.10889SO3, 1.0225SO3.H2O or 102.25% sulfuric acid. The conversion between% acid and% oleum is:% acid = 100 + 18/80 *% oleum

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