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標題:
Chem(ph value and mole)
發問:
I know it has some relationship between ph value and mole, please give me these data. 1. ph1=_____mol 2. ph2=_____mol 3. ph7=_____mol 4. ph10_____mol 5. ph14=____mol And the second question I wanna ask is Why more acidic substance will have a larger mole? 更新: M≠mol??
最佳解答:
mole is not related to pH value.. becoz even a large number of mole, [H3O+] can be low if the volume is much higher than number of mole (given that molarity = number of mole / volume) therefore it should be molarity/concentration of H3O+ ion which is related to pH value u can refer to the following formula pH = -log[H3O+] for example, if pH = 2, then [H3O+] = 0.01M, not mol :-) 2010-02-26 21:47:00 補充： M≠mol???? dun understand=_= 2010-02-26 21:48:42 補充： oo.. u wanna ask molarity = mole?? the ans is not~ becoz molarity = mole / volume / <--"divide", not "or"
Sorry, I checked the "mol" in the question is the concentration of the hydrogen ion (H+). 2011-08-27 15:18:57 補充： the "mol" of hydrogen ion is related to pH value. Isn't it?
Chem(ph value and mole)
發問:
I know it has some relationship between ph value and mole, please give me these data. 1. ph1=_____mol 2. ph2=_____mol 3. ph7=_____mol 4. ph10_____mol 5. ph14=____mol And the second question I wanna ask is Why more acidic substance will have a larger mole? 更新: M≠mol??
最佳解答:
mole is not related to pH value.. becoz even a large number of mole, [H3O+] can be low if the volume is much higher than number of mole (given that molarity = number of mole / volume) therefore it should be molarity/concentration of H3O+ ion which is related to pH value u can refer to the following formula pH = -log[H3O+] for example, if pH = 2, then [H3O+] = 0.01M, not mol :-) 2010-02-26 21:47:00 補充： M≠mol???? dun understand=_= 2010-02-26 21:48:42 補充： oo.. u wanna ask molarity = mole?? the ans is not~ becoz molarity = mole / volume / <--"divide", not "or"
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其他解答:Sorry, I checked the "mol" in the question is the concentration of the hydrogen ion (H+). 2011-08-27 15:18:57 補充： the "mol" of hydrogen ion is related to pH value. Isn't it?
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