اشرح الفرق بين نقطة التكافؤ ونقطة نهاية المعايرة
الإجابة هي: نقطة التكافؤ هي pH التي تتساوي عندها مولات ايونات H من الحمض من مولات ايونات OH من القاعدة نقطة نهاية المعايرة هي النقطة التي يتغير عندها لون الكاشف المستعمل في المعايرة.
نقطة التكافؤ ونقطة نهاية المعايرة هما نقطتان مهمتان يجب فهمهما من أجل قياس العينة بدقة. نقطة التكافؤ هي النقطة التي يكون عندها المعاير المضاف مكافئًا للتحليل في العينة، بينما نقطة النهاية هي النقطة التي يغير فيها المؤشر. يكمن الاختلاف الرئيسي بين هاتين النقطتين في غرضهما: تضمن نقطة التكافؤ أن كل التحليلات قد تفاعل معها وأنه لا يلزم إضافة المزيد من المعاير، بينما تظهر نقطة النهاية فقط عند حدوث تفاعل مرئي. هذا هو السبب في أنه من المهم فهم هاتين النقطتين، حيث إنهما جزء لا يتجزأ من الحصول على قياس دقيق.
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