Yuav ua li cas txiav txim siab purity ntawm poov tshuaj nitrate?

Cov tshuaj formula ntawm potassium nitrate yog KNO3, nyob rau hauv uas cov ntsiab lus nitrogen yog 13.9% thiab cov ntsiab lus poov tshuaj yog 38.7%.
Qhov no yog xam raws li molecular mis ntawm poov tshuaj nitrate. Nws qhov hnyav tag nrho yog 101g, ntawm qhov loj ntawm nitrogen yog 14g thiab qhov loj ntawm cov poov tshuaj yog 39g. Yog li ntawd, qhov loj feem ntawm nitrogen caij nyob rau hauv poov tshuaj nitrate yog 100% × 14 / 101=13 86%, thiab qhov loj feem ntawm poov tshuaj yog 100% × 39 / 101=38.61 %.
Yog hais tias purity ntawm poov tshuaj nitrate yog xam raws li nitrogen caij, ces nyob rau hauv tus qauv purity, 100% × 13% / 13.86% =93.80%. Yog hais tias purity ntawm poov tshuaj nitrate yog xam raws li cov poov tshuaj, ces nyob rau hauv tus qauv purity, nws purity yog 100% × 46% / 38.61% =119.14%.
Yog tias lwm cov tshuaj muaj cov poov tshuaj ntxiv rau cov khoom siv potassium nitrate ntxiv nrog rau cov poov tshuaj nitrate, xws li potassium chloride uas muaj 52.35% potassium lossis carbon, thiab lwm yam, cov ntsiab lus ntawm cov poov tshuaj hauv cov khoom yuav siab dua qhov uas tau muab los ntawm potassium nitrate ib leeg. Cov ntsiab lus tseem ceeb. Qhov no txhais tau hais tias tag nrho cov purity ntawm cov khoom yuav qis dua qhov theoretically xam tus nqi.