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ahojte, prečo roztok hydrogenuhličitanu vápenateho sa odvodzuje od h2co3 nemalo by sa to odvodzovat od trihydrgogen?
Dobrý deň, chcem sa opýtať na výpočet pH Ba(OH)2 Jeho pH je pH=-log(2xc), to viem. Ale pri opačnom výpočte (výpočte koncentrácie z pH) by som tiež mala zahrnúť tú dvojsýtnosť, nie? Čiže 10 umocnené…
Dobry den nevedeli by ste mi pomoct vypracovat ulohu 1,2 lebo neviem kedy v prvej ulohe je kysekina silna preot neviem kedy reaguje s vodou a v ulohe dva nerozumeim tomu S-2 ci to potom bude HS-
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