A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by
إعجاب
علق
شارك
DIVINE EMMANUEL
B. adding excess calcium hydroxide
C. adding a calculated amount of calcium hydroxide
D. adding sodium carbonate
E. adding magnesium hydroxide
حذف التعليق
هل أنت متاكد من حذف هذا التعليق ؟