If universal indicator shows red, the solution is?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

If universal indicator shows red, the solution is?

Explanation:
Universal indicator tells you how acidic or basic a solution is by color, which corresponds to its pH. Red shows a very acidic solution, with a pH around 1–2. A strong acid completely dissociates in water, giving a high concentration of hydrogen ions and a very low pH, so red is the expected color. Neutral solutions sit around green (pH about 7), while weak acids would appear more orange or yellow, indicating a higher pH than a strong acid. Alkalis, with high pH, show blue to purple colors. So red points to a strong acid.

Universal indicator tells you how acidic or basic a solution is by color, which corresponds to its pH. Red shows a very acidic solution, with a pH around 1–2. A strong acid completely dissociates in water, giving a high concentration of hydrogen ions and a very low pH, so red is the expected color. Neutral solutions sit around green (pH about 7), while weak acids would appear more orange or yellow, indicating a higher pH than a strong acid. Alkalis, with high pH, show blue to purple colors. So red points to a strong acid.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy