Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If the pH of a basic solution changes from 13 to 11, approximately how did its basicity change?

Answer and explanation

Correct answer: Decreased one hundred times

The pH scale is logarithmic, and pOH = 14 − pH at 25°C. At pH 13, pOH is 1; at pH 11, pOH is 3. Thus the hydroxide-ion concentration changes from about 10⁻¹ M to 10⁻³ M, a decrease by 10², or 100 times. The solution remains basic at pH 11, but it is much less basic. Therefore option A is correct.

Related tags

PhBasicityLogarithmic ScaleHydroxide ConcentrationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.