[DSE化學2017]同學準備好DSE CHEM未?
化學艾維斯
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有無mc ans
Paper2 1 co反應級數= 1.5 ?
係
Btw條滴定終點最後一刻先改成 light green -> purple我用中文考唔好怪我英文唔啱
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
可唔可以解釋下
我想問做新一題既時候好似無開新一版可以點算
佢會唔會睇？真係公開試先會犯依d on9錯誤
report
再打去熱線問
真係唔sure
good luck
屌同d 收卷既講佢話無計，兩個都係咁講
其實abc題係要開新一頁?
Btw條滴定終點最後一刻先改成 light green -> purple我用中文考唔好怪我英文唔啱
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
係咪 Fe 2+ 同 MnO4- ?
yellow to light purple
有mc ans未
岩岩先上車返去咋
儘快啦我
Btw條滴定終點最後一刻先改成 light green -> purple我用中文考唔好怪我英文唔啱
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
可唔可以解釋下
End point = first appearance of extra drop of Mnao4-
The remaining sol in conical flask is pale green becoz dilution effect
After an extra drop of MnO4-, with the dilution effect, purple to pale purple
Pale green to pale purple
Btw條滴定終點最後一刻先改成 light green -> purple我用中文考唔好怪我英文唔啱
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
係咪 Fe 2+ 同 MnO4- ?
yellow to light purple
Yes 👍
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
可唔可以解釋下
End point = first appearance of extra drop of Mnao4-
The remaining sol in conical flask is pale green becoz dilution effect
After an extra drop of MnO4-, with the dilution effect, purple to pale purple
Pale green to pale purple
唔係yellow to pale green咩?
唔係
調返轉?
都錯
可唔可以解釋下
End point = first appearance of extra drop of Mnao4-
The remaining sol in conical flask is pale green becoz dilution effect
After an extra drop of MnO4-, with the dilution effect, purple to pale purple
Pale green to pale purple
錯咗
??
唔係yellow to pale green咩?
唔係
調返轉?
都錯
係咪 Fe 2+ 同 MnO4- ?
yellow to light purple
Yes 👍
Fe2+ yellow
唔係yellow to pale green咩?
唔係
調返轉?
都錯
係咪 Fe 2+ 同 MnO4- ?
yellow to light purple
Yes 👍
Fe2+ yellow
So I say pale green
唔係yellow to pale green咩?
唔係
調返轉?
都錯
可唔可以解釋下
End point = first appearance of extra drop of Mnao4-
The remaining sol in conical flask is pale green becoz dilution effect
After an extra drop of MnO4-, with the dilution effect, purple to pale purple
Pale green to pale purple
屌做嗰時唔知做乜鳩無理fe2+
其實MC20 22 23先是最伏
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
鉛水 4.826 x10-8
H2so4 16.8M
烚 +226
H2O2 1M ?? 女木
有冇人一樣
鉛水唔記得 其他一樣
其實MC20 22 23先是最伏
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
我對完錯1題
錯ca3po42@@
其實MC20 22 23先是最伏
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
我對完錯1題
錯ca3po42@@
求答案
其實MC20 22 23先是最伏
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
我對完錯1題
錯ca3po42@@
求答案
0.01 mol A
其實MC20 22 23先是最伏
Burning coal under room temperature
同時有poison and non poison gas
真是唔知計唔計出CO好
我對完錯1題
錯ca3po42@@
求答案
CDABC
CACAA
BBDAB
AABDD
CDBCD
BCDAA
BCCDC
C