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! 🧪🌈
Russians and Ukrainians are both prolific users of Telegram. They rely on the app for channels that act as newsfeeds, group chats (both public and private), and one-to-one communication. Since the Russian invasion of Ukraine, Telegram has remained an important lifeline for both Russians and Ukrainians, as a way of staying aware of the latest news and keeping in touch with loved ones. So, uh, whenever I hear about Telegram, it’s always in relation to something bad. What gives? Under the Sebi Act, the regulator has the power to carry out search and seizure of books, registers, documents including electronics and digital devices from any person associated with the securities market. "Russians are really disconnected from the reality of what happening to their country," Andrey said. "So Telegram has become essential for understanding what's going on to the Russian-speaking world." Since its launch in 2013, Telegram has grown from a simple messaging app to a broadcast network. Its user base isn’t as vast as WhatsApp’s, and its broadcast platform is a fraction the size of Twitter, but it’s nonetheless showing its use. While Telegram has been embroiled in controversy for much of its life, it has become a vital source of communication during the invasion of Ukraine. But, if all of this is new to you, let us explain, dear friends, what on Earth a Telegram is meant to be, and why you should, or should not, need to care.
from fr
