Ответ: K - 69,64%, О - 28,57%, Н- 1,79%
Объяснение:
Мr(КОН) = Ar(К) + Ar(О) + Ar(Н) = 39 + 16 + 1 = 56
w(K) = Ar(K) /Мr(KOH) = 39/56 * 100% = 69,64%
w(O) = Ar(O) * n/Мr(KOH) = 16/56 * 100% = 28,57%
w(H) = Ar(H) /Мr(KOH) = 1/56 * 100% = 1,79%
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Ответ: K - 69,64%, О - 28,57%, Н- 1,79%
Объяснение:
Мr(КОН) = Ar(К) + Ar(О) + Ar(Н) = 39 + 16 + 1 = 56
w(K) = Ar(K) /Мr(KOH) = 39/56 * 100% = 69,64%
w(O) = Ar(O) * n/Мr(KOH) = 16/56 * 100% = 28,57%
w(H) = Ar(H) /Мr(KOH) = 1/56 * 100% = 1,79%