化學(xué)的base and acid的幾道題,
化學(xué)的base and acid的幾道題,
1.A table wine has a pH of 3.40.What is the hydronium ion concentration of the
wine?
2.A 2.5 x 10-3 M solution of an acid HA has a pH of 3.80 at 25°C.What is the
hydronium ion concentration of the solution?Calculate Ka for the acid.
3.The ionisation constant of a very weak acid,HA,is 4.0 x 10-9.Calculate the
equilibrium concentrations of H3O+,A- and HA in a 0.040 M solution.
筆記丟了 查又查不到 那位大大幫幫忙 記得要解題的思路阿 俺基礎(chǔ)不好
1.A table wine has a pH of 3.40.What is the hydronium ion concentration of the
wine?
2.A 2.5 x 10-3 M solution of an acid HA has a pH of 3.80 at 25°C.What is the
hydronium ion concentration of the solution?Calculate Ka for the acid.
3.The ionisation constant of a very weak acid,HA,is 4.0 x 10-9.Calculate the
equilibrium concentrations of H3O+,A- and HA in a 0.040 M solution.
筆記丟了 查又查不到 那位大大幫幫忙 記得要解題的思路阿 俺基礎(chǔ)不好
英語人氣：113 ℃時(shí)間：2020-05-12 23:14:25
優(yōu)質(zhì)解答
1,pH=3.4,根據(jù)pH的定義pH=-lg[H+]那么lg[H+]=-3.4用計(jì)算器可以得到[H+]=10^-3.4mol/L=3.98*10^-4mol/L2,pH=3.8同樣的可以得到[H+]=10^-3.8=(1.58*10^-4)mol/L寫出電離式HA==(可逆)==H(+)+A(-)這樣得到[HA]=(2.5*10^-...
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