Kitna Acidic? Ab Number Mein 📊
Indicators sirf itna batate hain ki cheez acid hai ya base. Par kitni? Iska jawaab deta hai pH scale — ek 0 se 14 tak ka paimana jo acid-base ki taakat ko number mein batata hai.
📌 pH scale: 0 se 14
• pH < 7 → Acidic (jitna kam, utna zyada acidic)
• pH = 7 → Neutral (shuddh paani)
• pH > 7 → Basic / Alkaline (jitna zyada, utna zyada basic)
💡 pH ka "p" "potenz" (jarman shabd, matlab "shakti/power") se aaya hai. pH ka matlab
hai "power of Hydrogen" — yani ghol mein H⁺ ions kitne hain.
📌 Zyada H⁺ ions → kam pH → zyada acidic. Ye ulta rishta yaad rakhna zaroori hai!
pH scale seedha (linear) nahi hai — har ek number ka farak 10 guna hota hai! Yani
pH 3 wala ghol, pH 4 se 10 guna zyada acidic hai, aur pH 5 se 100
guna. Isiliye pH 1 ka acid bahut hi khatarnaak hota hai.
(Board mein logarithm wali definition nahi poochi jaati — bas ye samajh lena kaafi hai.)
🌈 Kuch Cheezon Ka pH
| Cheez | Lagbhag pH | Kaisa |
|---|---|---|
| Pet ka acid (gastric juice) | 1 – 2 | Bahut acidic |
| Nimbu ka ras | 2 – 3 | Acidic |
| Sirka | 3 | Acidic |
| Tomato / coffee | 4 – 5 | Halka acidic |
| Doodh | 6 | Halka acidic |
| Shuddh paani | 7 | Neutral |
| Khoon (blood) | 7.4 | Halka basic |
| Baking soda ka ghol | 9 | Basic |
| Milk of magnesia | 10 | Basic |
| Sabun ka paani | 10 – 11 | Basic |
| NaOH ka ghol | 14 | Bahut basic |
🫀 pH Aur Hamara Shareer
1️⃣ Pet Ki Jalan (Acidity)
Hamare pet mein khana pachaane ke liye HCl banta hai (pH 1-2). Par zyada khaane ya tension se pet zyada acid bana deta hai — tab jalan (acidity) hoti hai. Ilaaj? Antacid — yani ek halka base (jaise milk of magnesia, Mg(OH)₂) jo extra acid ko neutralise kar deta hai.
⚠️ Antacid mein strong base kabhi nahi daalte — wo pet ko hi nuksaan pahuncha dega. Isiliye hamesha weak/mild base hi use hota hai.
2️⃣ Daanton Ka Sadna (Tooth Decay)
Hamare daant calcium phosphate ke bane hain — shareer ka sabse kada padarth. Par jab muh ka pH 5.5 se neeche chala jaata hai, toh ye ghulne lagta hai!
Muh mein maujood bacteria bachi hui cheeni ko khaakar acid banate hain. Ye acid muh ka pH 5.5 se neeche le jaata hai aur daant ka enamel ghulne lagta hai — yahi cavity hai. Isiliye mithai ke baad brush karna zaroori hai. Aur toothpaste halka basic hota hai — taaki wo us acid ko neutralise kar de!
3️⃣ Cheenti Aur Bichhoo Ka Doonk
Cheenti methanoic (formic) acid chhodti hai. Isliye us par baking soda (halka base) ya calamine lotion (zinc carbonate) lagane se jalan kam ho jaati hai — neutralisation!
📌 Nettle (bichhu-booti) ke paudhe ke doonk mein bhi methanoic acid hota hai. Gaon mein log uspar dock plant ki patti ragadte hain — jo base hoti hai. Prakriti ne ilaaj aksar zeher ke paas hi rakha hai!
🌾 pH Aur Kheti-Baadi
Har fasal ko ek khaas pH wali mitti chahiye — zyadatar paudhe pH 6 se 7.5 mein achhe ugte hain. Agar mitti ka pH galat ho toh paidavaar gir jaati hai.
| Samasya | Ilaaj |
|---|---|
| Mitti bahut acidic (pH kam) | Chuna (CaO) ya bujha chuna Ca(OH)₂ milaayein |
| Mitti bahut basic/alkaline (pH zyada) | Sadi hui khaad (organic matter) ya gypsum milaayein |
🐟 Acid rain aur machhliyan: Jab baarish ka pH 5.6 se kam ho jaata hai, use acid rain kehte hain. Ye nadi-talab mein girkar paani ka pH gira deti hai — aur machhliyan aur jaljeev mar jaate hain, kyunki wo sirf ek sankeern (narrow) pH range mein hi zinda reh sakte hain.
Bharat mein sarkar kisano ko Soil Health Card deti hai — jisme unke khet ki mitti ka pH aur poshak elements ki jaankari hoti hai. Isse kisan ko pata chalta hai ki kaunsi khaad daalni hai aur kitna chuna. Punjab-Haryana ke kai khet zyada khaad se alkaline ho gaye the — pH jaanch se hi ye samasya pakdi gayi.
🧠 Apne Aap Ko Test Karo
📊 pH Explorer mein slider ghumao — har pH par kya hota hai, khud dekho!
Open pH Explorer →