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Stna04
@Stna04
July 2022
1
9
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решите*задачу
дано
m(AgCl)=28.7
-------------------
m(AgNo3)-?
m(kcl
)-?
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moretzaz
Протекает реакция
AgCl+KNO3->AgNO3+KCl
1) n=m/Mr
Mr(AgCl)=143,5 гр/м
n(AgCl)=28,7/143,5=0,2 моль
=> n(AgNO3)=0,2 моль
m=n•Mr
Mr(AgNO3)=170гр/м
m(AgNO3)=0,2•170=34 гр
Mr(KCl)=74,5 гр/м
m(KCl)=0,2•74,5=14,9гр
Ответ: 34 г и 14,9 г.
1 votes
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Answers & Comments
AgCl+KNO3->AgNO3+KCl
1) n=m/Mr
Mr(AgCl)=143,5 гр/м
n(AgCl)=28,7/143,5=0,2 моль
=> n(AgNO3)=0,2 моль
m=n•Mr
Mr(AgNO3)=170гр/м
m(AgNO3)=0,2•170=34 гр
Mr(KCl)=74,5 гр/м
m(KCl)=0,2•74,5=14,9гр
Ответ: 34 г и 14,9 г.