What is the unit?
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On page 127 of the capacitance regulations, among the conditions for judging the wet hydrogen sulfide stress corrosion environment, the H2S partial pressure is required to be ≥0.00035MPa, which is equivalent to the H2S solubility in water at room temperature ≥10-5. What is the unit behind this solubility? Now we have two opinions here, one thinks it is g/L, the other thinks it is g/100g water
Solubility The solubility of a substance refers to the number of grams of a substance dissolved when it reaches saturation in 100 grams of solvent at a certain temperature. g/100g is unitless.
1. The solubility of a solid substance refers to the number of grams of a substance dissolved when it reaches a saturated state in 100 grams of solvent at a certain temperature. It is represented by the letter s, and its unit is "g/100g water". Unless otherwise stated, solubility generally refers to the solubility of a substance in water. 2. The solubility of a gas usually refers to the volume of the gas (its pressure is 1 standard atmosphere) dissolved in 1 volume of water at a certain temperature. "g/100g water" is also commonly used as the unit (naturally, volume can also be used). 3. Solubility refers to the number of grams of a substance dissolved when it reaches saturation in 100 grams of solvent (usually water) at a certain temperature. 4. Pay special attention to: The unit of solubility is grams (or grams/100 grams of water) rather than no unit.
This refers to the PPM concentration. According to the definition, you should be able to know the unit.
The one on the fourth floor is right, it should be PPM.
I think it should be g/100g water.
It should be a coefficient, unitless.