Question

Подчеркни объекты, обладающие электрической проводимостью: Дистиллированная вода, расплавленные NaOH, газообразный HCl, водный раствор HBr, кристаллы CuSO4, 100%-ная серная кислота, раствор HCl в бензоле C6H6, водный раствор серной кислоты, раствор CuSO4 в воде, водный раствор поваренной соли, твердый NaNO3

Answer 1

расплавленные NaOH, водный раствор HBr, водный раствор серной кислоты, раствор CuSO4 в воде, водный раствор поваренной соли

Answer 2

Objects with Electrical Conductivity

Objects that possess electrical conductivity include:

1. Distilled water: Pure water does not conduct electricity well because it lacks ions. However, when impurities or ions are present, such as dissolved salts or acids, it can conduct electricity to some extent [[1]].

2. Molten NaOH (sodium hydroxide): When sodium hydroxide is melted, it dissociates into sodium ions (Na+) and hydroxide ions (OH-), which allows it to conduct electricity [[2]].

3. Gaseous HCl (hydrochloric acid): In its gaseous state, hydrochloric acid does not conduct electricity because it does not dissociate into ions. However, when dissolved in water, it forms H+ and Cl- ions, enabling it to conduct electricity [[3]].

4. Aqueous solution of HBr (hydrobromic acid): Similar to hydrochloric acid, hydrobromic acid dissociates into H+ and Br- ions when dissolved in water, allowing it to conduct electricity [[4]].

5. Crystals of CuSO4 (copper sulfate): Copper sulfate crystals do not conduct electricity in their solid state. However, when dissolved in water, they dissociate into Cu2+ and SO4^2- ions, making the solution conductive [[5]].

6. 100% sulfuric acid (H2SO4): Pure sulfuric acid is a strong electrolyte and can conduct electricity well due to its ability to dissociate into H+ and SO4^2- ions [[6]].

7. Aqueous solution of HCl in benzene (C6H6): Benzene is a nonpolar solvent and does not conduct electricity. Therefore, an aqueous solution of hydrochloric acid in benzene would not be conductive [[7]].

8. Aqueous solution of sulfuric acid (H2SO4): Similar to pure sulfuric acid, an aqueous solution of sulfuric acid can conduct electricity because it dissociates into ions when dissolved in water [[8]].

9. Aqueous solution of CuSO4 (copper sulfate) in water: As mentioned earlier, copper sulfate dissociates into ions when dissolved in water, allowing the solution to conduct electricity [[5]].

10. Aqueous solution of table salt (NaCl): When dissolved in water, table salt dissociates into Na+ and Cl- ions, making the solution conductive [[9]].

11. Solid NaNO3 (sodium nitrate): In its solid state, sodium nitrate does not conduct electricity because it does not have mobile ions. However, when dissolved in water, it dissociates into Na+ and NO3- ions, enabling the solution to conduct electricity [[10]].

Please note that the conductivity of these substances may vary depending on factors such as concentration, temperature, and impurities present.

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