Read More
Date: 14-10-2018
823
Date: 9-10-2018
878
Date: 5-1-2019
1173
|
The Group 2 hydrogen carbonates such as calcium hydrogen carbonate are so unstable to heat that they only exist in solution. Any attempt to extract them from solution causes them to decompose to the carbonate, carbon dioxide and water as shown:
By contrast, the Group 1 hydrogen carbonates are stable enough to exist as solids, although they do decompose easily on heating. For example, this is the reaction for sodium hydrogen carbonate:
|
|
كيف تساهم الأطعمة فائقة المعالجة في تفاقم مرض يصيب الأمعاء؟
|
|
|
|
|
مشروع ضخم لإنتاج الهيدروجين الأخضر يواجه تأخيرًا جديدًا
|
|
|
|
|
المجمع العلمي يختتم دورته القرآنية في فن الصوت والنغم بالطريقة المصرية
|
|
|