Question

какие из приведённых металлов: литий, кальций, железо, серебро, взаимодействуя с водой, образуют щелочи? Напишите уравнения возможных реакций.

Answer 1

Литий и Кальций:) Литий щелочной метал, а Кальций-щелочноземельный, уравнения: 1)Li+H2O=LiOH,2)Ca+H2O=Ca(OH)2!:)

Answer 2

Только Калий т.к. является щелочным металом.

2K+2HOH=2KOH +H2стрелочка вверх

Answer 3

Metals Reacting with Water to Form Bases

When certain metals react with water, they can form bases. The metals that form bases when reacting with water include lithium, calcium, and sodium.

The possible reactions of these metals with water are as follows:

1. Lithium (Li): - Reaction: 2Li + 2H2O → 2LiOH + H2 - Explanation: Lithium reacts with water to form lithium hydroxide and hydrogen gas.

2. Calcium (Ca): - Reaction: Ca + 2H2O → Ca(OH)2 + H2 - Explanation: Calcium reacts with water to form calcium hydroxide and hydrogen gas.

3. Iron (Fe): - Iron does not react with water under normal conditions.

4. Silver (Ag): - Silver does not react with water under normal conditions.

5. Sodium (Na): - Reaction: 2Na + 2H2O → 2NaOH + H2 - Explanation: Sodium reacts with water to form sodium hydroxide and hydrogen gas.

These reactions demonstrate the formation of bases when certain metals interact with water.