Answer the following questions:1. Why is acid added to water before el

1.	Answer the following questions:1. Why is acid added to water before electrolysis ?2. What is the chemical composition of water ? Give its molecular formula.3. How does the anomalous expansion of water help aquatic organisms in cold climates ?4. Name two gases dissolved in natural water.
Answer» 1. Acid is added to water before electrolysis to make it good conductor of electricity. 2. The constituents of water are hydrogen and oxygen. The molecular formula is H₂O. 3. When water is cooled it contracts and its density, increases until the temperature reaches 4°C, on further cooling water starts expanding with the decrease in its density. This is anomalous phenomenon. The aquatic organisms can live there easily. 4. Hydrogen and oxygen gases are dissolved in water.

Answer the following questions:1. Why is acid added to water before electrolysis ?2. What is the chemical composition of water ? Give its molecular formula.3. How does the anomalous expansion of water help aquatic organisms in cold climates ?4. Name two gases dissolved in natural water.

Answer»

1. Acid is added to water before electrolysis to make it good conductor of electricity.

2. The constituents of water are hydrogen and oxygen. The molecular formula is H₂O.

3. When water is cooled it contracts and its density, increases until the temperature reaches 4°C, on further cooling water starts expanding with the decrease in its density. This is anomalous phenomenon. The aquatic organisms can live there easily.

4. Hydrogen and oxygen gases are dissolved in water.

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Answer the following questions:1. Why is acid added to water before electrolysis ?2. What is the chemical composition of water ? Give its molecular formula.3. How does the anomalous expansion of water help aquatic organisms in cold climates ?4. Name two gases dissolved in natural water.

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