• 2022-11-02
    以[tex=2.071x1.0]ilS1etkWxx9fIBwFiymTRA==[/tex]电流电解[tex=3.071x1.214]7DwxhGxAb/K3QxcJPMNEhQ==[/tex]溶液,[tex=2.857x1.0]W1lgjbdigyh9RwxjHrYFCQ==[/tex]后,在铂阳极上可以获得多少体积的氧气[tex=6.643x1.357]wY1Iy8Mj9k5ISTHQ+VFC6A==[/tex]?
  • 电极反应为:阴极:[tex=7.286x1.357]eTbnon86X9glm5C2laNMeT7CoIK0W2MktUbpfgGskW0GOWYkqJcdk/QSbQIU2H+w[/tex]阳极:[tex=11.357x1.429]l7H/xC9GPW5v+aLcCPPYFYtIdQ12ta0M5Ft3X73DNcQZkkrs1YbwOWYKEKVcWmMFwdXgIlb8BKAabhmNSDeFQw==[/tex]则:[tex=1.786x1.0]e0MSKHc1WFUvWPRBaZ0RlA==[/tex]根据:[tex=6.0x1.214]KlpAoLfB5iIhC8gIkSmEeQ==[/tex][tex=21.071x2.5]hnQ8wP7ol7OPlaW+wQ7GH/zVYh/OVS5K9lnN7Kn3PqxeMtLSRG1GVttjiPgNvqV2nMGfdnFwF8V3ckD1qfqfM84Xtjo5AxvOvYepHb9CWsEqDiVQuYg8Skl3zFFAxj1U[/tex][tex=26.571x1.5]kxRZ1ZNfHszyO6ilXFTUFnwnbSGOyfeLFRWtYt/ETfborem+XXCzww7P5dEWD5p43c8uKKKv5KS/u9iguVl6nbPM6qTmn24pB6h4oEqqCs0=[/tex]又[tex=9.071x3.071]a0s3MH7cLIdmiBRR0YN06zHi6qafyStn5tfp5e3x76+/3zxcT+lndb8Sd4JSFoSyvOazoqgoMJwLRN1roDg1LtYmH0QkBCitwKRGxepyowcpF3wo5Q6+YyTKO1Ut7hy/kWccaHiaZiH0OdUrPqeuEsndrZtQRmyg8MkJaEhEehg=[/tex]则[tex=29.643x2.714]D7Uyd5qX0pohU2oSc77WsAqz3fthIO/p9SAJd19X6PzYJ9croJpGmpJTgw+RPkvuHcLRueDqatruu+EU4RJC3sajG/HCsEOZrPyNBqY1HAd6mDyoPM3VILH8K9wdzddhi1NzPUmI0hex1Th8ZgIHIBMZvqQzNxZTG8W0N4ufewxL1OyYcYs8URJgeOTUbF64m3gcM9d0CWpWy9fdbrQkyQ==[/tex]

    内容

    • 0

      在化合物[tex=3.143x1.214]v4ZSy342c4rYHJ17K2Seyg==[/tex]的质谱中, [tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex]和[tex=2.286x1.143]6xy5cvv57RhdtLjINMq7Bw==[/tex]峰的相对强度比应为( ) A: 98. 9 : 1. 1 B: 98. 9 : 0. 02 C: 2 : 1 D: 1 : 1 E: 3 : 1

    • 1

        [tex=10.214x1.429]/LTB/AKdzlj8A5bn0ikx64AaMQRo5QvWeHLkJzt7XZK6bKqjQkqV0RZl4M50xcWVY7xzfhw7QzXQNvf+RuGEwOOE7Imvp8GXaEqGoj2it6A=[/tex] 溶液 [tex=3.214x1.214]tyv2Uulj+W/3xzUcdofi+bLwGXUrzanCwS7FHlgcjYA=[/tex] 和 [tex=10.214x1.429]seHyLpay1Zeo0ib4E0psSFszZFWcwcKV78mdPEUOIU251mUgBb2bhaVatVYEt0HAEMzI6eLy1i3FuWp2bM0JPc0b5MZjNKJRC3k2iJ5/tlw=[/tex]溶液 [tex=2.714x1.214]EkUqh6uka2JeFCyqSCKH4eC7MtJa1OPVwAodME1/1/k=[/tex]混合后,溶液的 [tex=1.357x1.214]5Y4aY4NNGp2CUHfWC5RWGA==[/tex]为多少?若向溶液中加入 [tex=8.786x1.214]eSf8en7mCJGTZyWvUasj2WX8tAKQwoIr7hTthI5heymMeMy22Fkc94HT1XgpaKPdVWXscOsIivH5t6YSsjQ0ow==[/tex]溶液 [tex=3.0x1.429]6QcOcBU6ciX1XIkv8i3l+Y70mWOixBBYQsIvvdH4OqY=[/tex]溶液的 [tex=1.357x1.214]5Y4aY4NNGp2CUHfWC5RWGA==[/tex]为多少 ? 

    • 2

      计算以下难溶化合物的溶解度:[tex=2.929x1.214]PmL/RqCjUX4mJRBjhCx0LOwp6v0XWbt/kpLxSM5hKrI=[/tex] 在 [tex=6.643x1.357]FxQA2d1U8+W+Lo28BRAr3oCcBh/9/14oGWYeoosh8FyeUBT6fz3V13qitXXerocfMfF4cn1lhQyd9L0wTop9XA==[/tex] 中。 [ 已知[tex=3.071x1.214]etCl+a5RVy6pMqu432X+Kh0BceHfChTgdKwYMc56CCNq1z5h3X4gskOzX0fexhD5[/tex]的 [tex=16.714x1.571]wo2uiZ609QyfdfLdTANh2m2O8cGJ3LrpUCkJyWY2Cg4bW9krJaatRbsssT7lyBKx/l0wOcq1dABmcVhZ8+YEzZTDLQMoQ0AFQa8JoXRB0bLd5+R5WF/CV8GfXWbBtM76CYyl6x0PZS5DqznZ3wy6qg==[/tex]

    • 3

      用铂电极电解[tex=2.714x1.214]UZfqlCDrtD97RNRC9tuoEg==[/tex]溶液,通过的电流为20 A,经过 15 min 后,问在阴极上能析出多少铜? 在阳极上能析出多少 [tex=2.143x1.071]4r8cbkwx69uKjpbSGauGEw==[/tex]、100 kPa下的[tex=1.429x1.214]ogzwnmEUn9+58vYBf98W2Q==[/tex]?

    • 4

      6个顶点11条边的所有非同构的连通的简单非平面图有[tex=2.143x2.429]iP+B62/T05A6ZTM0eeaWiQ==[/tex]个,其中有[tex=2.143x2.429]ndZSw3zT0QTOVLVdoUto1Q==[/tex]个含子图[tex=1.786x1.286]J+vVZa2YaMpc6mJBbqVvWw==[/tex],有[tex=2.143x2.429]lmhx48evnQMhi03NovPXig==[/tex]个含与[tex=1.214x1.214]kFXZ1uR8GjycbJx+Ts2kyQ==[/tex]同胚的子图。供选择的答案[tex=3.071x1.214]3KinXFh3SXhZ7nIe1y9KEV6aadxhhJWeEy6Dij1iObdMUZkY6ZA5J2dVVjPSuhEf[/tex]:(1) 1 ;(2) 2 ;(3) 3 ; (4) 4 ;(5) 5 ;(6) 6 ; (7) 7 ; (8) 8 。