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url url url url
  2. Weltenzyklopädie
  3. کربنیک اسید - ویکی‌پدیا، دانشنامهٔ آزاد
کربنیک اسید - ویکی‌پدیا، دانشنامهٔ آزاد
از ویکی‌پدیا، دانشنامهٔ آزاد
کربنیک اسید
دیگر نام‌ها

محلول [ه[دی‌اکسید کربن]]، کربنات دی هیدروژن (IUPAC)

شناساگرها
شماره ثبت سی‌ای‌اس ۴۶۳–۷۹–۶
جی‌مول-تصاویر سه بعدی Image 1

  • C(=O)(O)O

خصوصیات
فرمول مولکولی H2CO3
جرم مولی 62.03 g/mol
چگالی 1.0 g/cm3
(محلول رقیق اما ضعیف)
انحلال‌پذیری در آب exists only in solution
اسیدی (pKa) 6.36 (see text)
10.25
به استثنای جایی که اشاره شده‌است در غیر این صورت، داده‌ها برای مواد به وضعیت استانداردشان داده شده‌اند (در 25 °C (۷۷ °F)، ۱۰۰ kPa)
Infobox references

کربنیک اسید (به انگلیسی: Carbonic acid) ترکیبی معدنی با فرمول H2CO3 و طبق طبقه‌بندی لوری و برونستد یک اسید ضعیف است که به‌طور ناقص و ضعیف دچار یونش می‌شود.

کربنیک اسید را می‌توان با افزودن مقداری HCL به ⁻CO3² بدست آورد در PH حدود ۳ علاوه بر آن در بدن از واکنش کربن دی‌اکسید و آب بدست می‌آید

همچنین کربنیک اسید از واکنش تعادلی دی‌اکسید کربن موجود در جَو با مولکول‌های آب گازی شکل نیز به صورت آب پوشیده به دست می‌آید.

با فرمول:

CO2(g)+H2O(g)⇌H2CO3(aq)

افزایش میزان کربنیک اسید در خون باعث کاهش PH خون می‌شود. این تغییر PH باعث تغییر در ساختار پروتئین‌ها می‌شود و می‌تواند عملکرد پروتئین‌ها را مختل کند و به این دلیل که بسیاری از فعالیت‌های یاخته را پروتئین‌ها برعهده دارند باعث اختلال در فعالیت‌های یاخته و بافت‌ها می‌شود. در واقع افزایش کربن دی‌اکسید خطرناک تر از کاهش اکسیژن است.

منابع

در ویکی‌انبار پرونده‌هایی دربارهٔ کربنیک اسید موجود است.
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