Question

В оцинкованном сосуде нельзя хранить раствор соли, формула которой?1) NaCl2) BaCl3) K2SO44) Cu(NO3)2

Answer 1

Cu(NO3)2 сразу же ясно......

Answer 2

Incompatibility of Zinc with Salt Solutions

In an oxygen-free environment, zinc can react with salt solutions, leading to the formation of zinc chloride and hydrogen gas. This reaction can occur with various salt solutions, including those with the formulae: 1. NaCl 2. BaCl2 3. K2SO4 4. Cu(NO3)2

The reaction can be represented as follows: ``` Zn + 2NaCl → ZnCl2 + H2 Zn + BaCl2 → ZnCl2 + Ba Zn + K2SO4 → ZnSO4 + 2K Zn + Cu(NO3)2 → Zn(NO3)2 + Cu ```

It's important to note that the reactivity of zinc with salt solutions is influenced by various factors such as the concentration of the solution, temperature, and the presence of oxygen. Therefore, it's advisable to consider alternative storage options for salt solutions when using zinc containers.