Na[img=7x22]1803dd52723b1dc.png[/img]S[img=7x22]1803dd527a5b66d.png[/img]O[img=7x22]1803dd52837205c.png[/img]和HNO[img=7x22]1803dd528c8c767.png[/img]都能够较好地溶解AgBr试剂。( )
举一反三
- 欲分离AgCl、AgBr、AgI,并使之变成溶液,需使用的试剂和先后次序是( )。 A: NH[img=7x22]1803dd512fac4af.png[/img],Na[img=7x22]1803dd5138ffb2f.png[/img]S[img=7x22]1803dd5142ad173.png[/img]O[img=7x22]1803dd514c57a96.png[/img],KCN B: KCN,NH[img=7x22]1803dd512fac4af.png[/img],Na[img=7x22]1803dd5138ffb2f.png[/img]S[img=7x22]1803dd5142ad173.png[/img]O[img=7x22]1803dd514c57a96.png[/img] C: Na[img=7x22]1803dd5138ffb2f.png[/img]S[img=7x22]1803dd5142ad173.png[/img]O[img=7x22]1803dd514c57a96.png[/img],NH[img=7x22]1803dd512fac4af.png[/img],KCN D: KCN,Na[img=7x22]1803dd5138ffb2f.png[/img]S[img=7x22]1803dd5142ad173.png[/img]O[img=7x22]1803dd514c57a96.png[/img],NH[img=7x22]1803dd512fac4af.png[/img]
- 假定Sb[img=7x22]1803dd49c179016.png[/img]S[img=7x22]1803dd49c99e260.png[/img](s)的溶解度为x mol·L[img=17x22]1803dd49d248c3b.png[/img],则[img=28x28]1803dd49dafed3c.png[/img]应为( )。 A: [img=28x28]1803dd49e3a9672.png[/img]=x[img=7x22]1803dd49ec515a7.png[/img]·x[img=7x22]1803dd49f5a7624.png[/img]= x[img=7x22]1803dd49fdc3ba4.png[/img] B: [img=28x28]1803dd4a062ad6a.png[/img]=2x·3x=6x[img=7x22]1803dd4a0f09d1e.png[/img] C: [img=28x28]1803dd4a062ad6a.png[/img]=x[img=7x22]1803dd4a0f09d1e.png[/img] D: [img=28x28]1803dd4a062ad6a.png[/img]=(2x)[img=7x22]1803dd4a323468e.png[/img]·(3x)[img=7x22]1803dd4a3a6fefa.png[/img]=108x[img=7x22]1803dd4a4341475.png[/img]
- 不查表估计下列反应在298K时熵改变最大的是( ) A: CO[img=7x22]1803dd43123c9d2.png[/img] (g) → C (s) + O[img=7x22]1803dd43123c9d2.png[/img](g) B: 2SO[img=7x22]1803dd432476515.png[/img](g) → 2SO[img=7x22]1803dd43123c9d2.png[/img](g) +O[img=7x22]1803dd43123c9d2.png[/img] (g) C: CaSO[img=7x22]1803dd433dcc3ca.png[/img]·2H[img=7x22]1803dd43123c9d2.png[/img]O(s) → CaSO[img=7x22]1803dd433dcc3ca.png[/img](s) +2H[img=7x22]1803dd43123c9d2.png[/img]O(l) D: 2NH[img=7x22]1803dd432476515.png[/img](g) → 3 H[img=7x22]1803dd43123c9d2.png[/img](g) +N[img=7x22]1803dd43123c9d2.png[/img](g)
- 在一定温度下列过程中熵变最大的是( )。 A: H[img=7x22]1803dd41e47816d.png[/img]O(s) → H[img=7x22]1803dd41edb5a5f.png[/img]O(l) B: H[img=7x22]1803dd41e47816d.png[/img]O(s) → H[img=7x22]1803dd41edb5a5f.png[/img]O(g) C: H[img=7x22]1803dd41e47816d.png[/img]O(l) → H[img=7x22]1803dd41edb5a5f.png[/img]O(g) D: H[img=7x22]1803dd41e47816d.png[/img]O(l) → H[img=7x22]1803dd41edb5a5f.png[/img]O(s)
- 下列反应中[img=45x26]1803dd609acfce2.png[/img]>0的是 ( ) A: 2H[img=7x22]1803dd60a43da71.png[/img](g)+O[img=7x22]1803dd60a43da71.png[/img](g)=2H[img=7x22]1803dd60a43da71.png[/img]O(g) B: N[img=7x22]1803dd60a43da71.png[/img](g)+3H[img=7x22]1803dd60a43da71.png[/img](g)=2NH[img=7x22]1803dd60cec07da.png[/img](g) C: NH[img=7x22]1803dd60d7395bb.png[/img]Cl(s)= NH[img=7x22]1803dd60e03f2ee.png[/img](g)+HCl(g) D: C(s)+O[img=7x22]1803dd60a43da71.png[/img](g)=CO[img=7x22]1803dd60a43da71.png[/img](g)