Question

HCl 及 H2SO4(自问酸好劲的你)

Answer 1

更新1:

corr....是边只acid既导电能力教强??

1M的HCI导电能力较强。 导电能力ge强弱
系睇自由离子的浓度(concentration of mobile ions)
酸 ionized 后
H+ ion 越多
导电能力就越强。 而HCI 同 H2SO4 都系强酸
但系H2SO4系dibasic
佢溶系水之后会ionized
注意
系分开2条equations: (1) H2SO4---------＞H+ + HSO4- (2) HSO4- ＜---＞ H+ + SO4 2- (1)系pletely ionized: n mole H2SO4 首先会出 n mole H+ 之后再进行(2)
(2)系inpletely ionized: n mole H2SO4 会出返＜n mole ge H+ 所以系题目
0.5 M的 H2SO4中
入面每0.5 mole ge H2SO4会出返 0.5 + ＜0.5 mole ge H+ ＝ ＜ 1 mole ge H+ 至于HCI
只系一条equation: HCL ---＞ H+ + Cl- 佢系pletely ionized: n mole HCI 会出返 n mole H+ 系题目
1 M的HCl
入面每1 mole ge HCl会出返 1 mole ge H+ 所以1 M的HCl自由离子的浓度比0.5 M的 H2SO4高
所以导电能力较强。
HCl和H2SO4都是强酸 强酸系浓度高的时候
the percentage of dissociation 会下降
相反系浓度低的时候
the percentage of dissociation 会上升 所以1M的HCI的 percentage of dissociation 系低过0.5 M的 H2SO4 即系话H2SO4会电离产生较多离子 而且
H2SO4系二元酸
HCl系一元酸 每个H2SO4可以放两个氢离子
而每个HCl就只以放一个 总括来说
0.5 M的 H2SO4的conductivity系高过1M的HCI
参考: 自己
When acid is used as electrolyte
the most important factor is the concentration of proton. In this case
molarities of proton in o solution are the same. they have almost the same electrical conductivity. If the cation is not proton but others such as sodium
anion determins conductivity. since sulphate ion is more bulky than chloride ion
chloride is more electrical conductive than sulphate.