What happens when we drink H₂O (water) in the body? When we
What happens when we drink H₂O (water) in the body?
When we drink H₂O (water), it is not destroyed inside the body. Instead, it performs many essential functions.
💧 Functions of water inside the body
1️⃣ Helps in digestion
• Dissolves food
• Helps in the formation of saliva, gastric juice, and digestive enzymes
• Prevents constipation
2️⃣ Transports nutrients
• Water carries vitamins, minerals, glucose, and other nutrients through the blood to all parts of the body
3️⃣ Cleans the body (Detoxification)
• Helps kidneys produce urine
• Removes waste through sweat
• Eliminates toxic substances like urea and uric acid
4️⃣ Regulates body temperature 🌡️
• Sweat cools the body
• Maintains thermal balance during fever or hot conditions
5️⃣ Protects joints and organs
• Lubricates joints
• Protects the eyes, brain, and spinal cord
6️⃣ Affects brain function and energy
• Lack of water causes fatigue, dizziness, and headaches
• Proper hydration improves concentration and memory
❓ Is water “destroyed” inside the body?
No. Water is not destroyed, it is used and then removed from the body in different ways:
• 💦 Through urine
• 😓 Through sweat
• 🌬️ As water vapor in exhaled air
• 💩 A small amount through feces
So, water is utilized and excreted, not destroyed.
🚰 How much water should we drink?
• Normal adult: 2.5 – 3 liters per day
• More during hot weather, physical work, or exercise
❓ Does H₂O break into hydrogen (H₂) and oxygen (O₂) inside the body?
👉 No. Under normal physiological conditions, water does NOT break into H₂ and O₂ inside the body.
🔬 Why doesn’t the body split H₂O into H₂ O₂?
Because:
• Splitting water requires a large amount of energy
• In laboratories, water is split by electrolysis (electric current)
• The human body has no mechanism to perform such a reaction
Therefore, water is not converted into hydrogen and oxygen gases inside the body.
⚗️ What actually happens to water inside the body?
1️⃣ Ionization (very limited)
A very small fraction of water undergoes ionization:
H₂O ⇌ H⁺ OH⁻
• This is called ionization, not decomposition
• It helps maintain the body’s pH (~7.4)
• This process is highly controlled
2️⃣ Participation in chemical reactions
• Water participates in hydrolysis reactions during digestion
• Helps break down proteins, carbohydrates, and fats
• However, water itself does not split into gases
3️⃣ What happens in mitochondria? (Important ❗)
This is a common point of confusion:
• Oxygen (O₂) combines with hydrogen ions (H⁺) and electrons
• This reaction forms water, it does not break it
O₂ 4H⁺ 4e⁻ → 2H₂O
👉 This means water is produced in the body, not decomposed.
❌ Why doesn’t this reaction occur in the body?
H₂O → H₂ O₂
Because:
• It is an energy-consuming reaction
• The body favors energy-releasing reactions
• Hence, the body forms water instead of breaking it
🧠 Conclusion (Exam Points)
• ❌ Water does NOT split into H₂ and O₂ inside the body
• ✅ Only slight ionization (H⁺ and OH⁻) occurs
• ✅ Water is formed in mitochondria during respiration
• ✅ Water is used by the body and the excreted not destroyed.
Comments
Very inspiring!
Did you cook this yourself?