enthalpy cycle 唔係好普通咩
幾時變咗係伏
因為好多人學左另一個快d既approach
反而我以為大家會掛住計數，唔識點解做唔到formation of C2H2同hess's law definition
等我仲臨考一日先背左幾個definition
Hess law definition
我寫左The total enthalpy of reaction are constant 😂😂
[DSE化學2017]同學準備好DSE CHEM未?
化學艾維斯
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Hess law definition
我寫左The total enthalpy of reaction are constant 😂😂
想問elective in chem
比左個圖問order of reaction
係咩order
Con against time
Decrease linearly
U think ?
我寫first order
但見到kelvin lau IG 打話咩 zeroth order
仲話mock出過 應該要識
Yes zero order
If first order
你個濃度下降個rate(slope)唔會係constant
而係越來越平
想問elective in chem
比左個圖問order of reaction
係咩order
Con against time
Decrease linearly
U think ?
我寫first order
但見到kelvin lau IG 打話咩 zeroth order
仲話mock出過 應該要識
1st / 2nd order can't be concluded from this graph merely
Since the slope at every point in con Vs time graph representing 1st / 2nd order graph is ever changing
-> a similar curve will be plotted
Molamola 仲諗住有5** 發夢
個delta H formation 係咪200幾？
+226kJmol-1 la
個delta H formation 係咪200幾？
It seems correct
想問elective in chem
比左個圖問order of reaction
係咩order
Zeroth
Concentration of A decreases linearly with time
我寫左 As the slope of graph is constant so rate is constant, any change in concentration will not affect rate
想問elective in chem
比左個圖問order of reaction
係咩order
Con against time
Decrease linearly
U think ?
我寫first order
但見到kelvin lau IG 打話咩 zeroth order
仲話mock出過 應該要識
1st / 2nd order can't be concluded from this graph merely
Since the slope at every point in con Vs time graph representing 1st / 2nd order graph is ever changing
-> a similar curve will be plotted
Order應該係0 係計slope個速度都冇變
Yes
I was saying if the curve in 1st/2nd
上面話C2H2係邊題
無讀兩年真係甩鬼晒
完全唔覺得係zero 仲好自然咁寫first
完全唔覺得係zero 仲好自然咁寫first
有冇whole paper solution
上面話C2H2係邊題
Enthalpy gor題
上面話C2H2係邊題
Enthalpy gor題
Oh ty
寫from the graph , the line is downward sloping
寫from the graph , the line is downward sloping
可能會被人扣
因為1st order 都係downward sloping
上面話C2H2係邊題
Enthalpy gor題
Oh ty
等我以為我又有咩錯左
暫時p1錯左~8分，p2 3分
仲未計文字題啱唔啱
我想問測試na+ 同k+果題可以寫溶左佢落水
之後睇顏色？
Flame test？
我想問測試na+ 同k+果題可以寫溶左佢落水
之後睇顏色？
No
Na+ ion in aq no color
Flame test for Na+/K+ cpd
我想問測試na+ 同k+果題可以寫溶左佢落水
之後睇顏色？
溶落水有咩顔色睇
上面話C2H2係邊題
Enthalpy gor題
Oh ty
等我以為我又有咩錯左
暫時p1錯左~8分，p2 3分
仲未計文字題啱唔啱
等睇d人背有side product
我覺得錯
Only C H, won't give side product