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dmitryterekhov
@dmitryterekhov
July 2022
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Химия полностью первое задание решите пожалуйста. С рассчетом
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janislav
Verified answer
HF=H(+)+F(-)
Kа(HF)= C(H+)·C(F-) /C(HF)
n(HF)=m(HF)/M(HF)=2/20=0,1 моль
pH=-㏒[H+]=-㏒( √( Ka(HF)· C(HF) )) =-㏒(√( 6,61·10∧-4 · 0,1)) = 2,09
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Answers & Comments
Verified answer
HF=H(+)+F(-)Kа(HF)= C(H+)·C(F-) /C(HF)
n(HF)=m(HF)/M(HF)=2/20=0,1 моль
pH=-㏒[H+]=-㏒( √( Ka(HF)· C(HF) )) =-㏒(√( 6,61·10∧-4 · 0,1)) = 2,09