هنگامی که سدیم هیدروکسید (NaOH) به محلولی حاوی فنل‌فتالئین افزوده می‌شود، محیط محلول قلیایی شده و فنل‌فتالئین به رنگ صورتی یا ارغوانی زیبایی تغییر رنگ می‌دهد.
🌸 این واکنش یکی از آزمایش‌های جذاب شیمی برای نشان دادن تغییرات pH است! 🧪🌈
هنگامی که سدیم هیدروکسید (NaOH) به محلولی حاوی فنل‌فتالئین افزوده می‌شود، محیط محلول قلیایی شده و فنل‌فتالئین به رنگ صورتی یا ارغوانی زیبایی تغییر رنگ می‌دهد.
🌸 این واکنش یکی از آزمایش‌های جذاب شیمی برای نشان دادن تغییرات pH است! 🧪🌈
Now safely in France with his spouse and three of his children, Kliuchnikov scrolls through Telegram to learn about the devastation happening in his home country. Stocks dropped on Friday afternoon, as gains made earlier in the day on hopes for diplomatic progress between Russia and Ukraine turned to losses. Technology stocks were hit particularly hard by higher bond yields. Ukrainian forces have since put up a strong resistance to the Russian troops amid the war that has left hundreds of Ukrainian civilians, including children, dead, according to the United Nations. Ukrainian and international officials have accused Russia of targeting civilian populations with shelling and bombardments. Update March 8, 2022: EFF has clarified that Channels and Groups are not fully encrypted, end-to-end, updated our post to link to Telegram’s FAQ for Cloud and Secret chats, updated to clarify that auto-delete is available for group and channel admins, and added some additional links. And while money initially moved into stocks in the morning, capital moved out of safe-haven assets. The price of the 10-year Treasury note fell Friday, sending its yield up to 2% from a March closing low of 1.73%.
from sg
