For a chemical reaction with rise in temperature by 10^…

Question

For a chemical reaction with rise in temperature by $10^\circ$, the rate constant becomes nearly _______.

Select an answer

Question & Answer (English)

For a chemical reaction with rise in temperature by $10^\circ$, the rate constant becomes nearly _______.

  1. Triple
  2. half
  3. Double — Correct Answer
  4. one-fourth
Explanation:

For a chemical reaction, with a rise in temperature by $10^\circ\text{C}$, the rate constant becomes nearly Double.

  • This phenomenon is described by the Temperature Coefficient, which is the ratio of rate constants at two temperatures differing by $10^\circ\text{C}$. Usually, this ratio is between 2 and 3.
  • As temperature increases, the fraction of molecules possessing threshold energy increases significantly, leading to more effective collisions and a faster reaction rate.

प्रश्न एवं उत्तर (हिंदी)

किसी रासायनिक अभिक्रिया के लिए तापमान में $10^\circ$ की वृद्धि होने पर, वेग स्थिरांक (rate constant) लगभग _______ हो जाता है।

  1. तीन गुना (Triple)
  2. आधा (half)
  3. दोगुना (Double) — सही उत्तर
  4. एक-चौथाई (one-fourth)
स्पष्टीकरण:

रसायन विज्ञान में यह एक बहुत ही सामान्य नियम है कि यदि आप किसी अभिक्रिया का तापमान $10^\circ\text{C}$ बढ़ा देते हैं, तो उस अभिक्रिया का वेग स्थिरांक (rate constant) लगभग दोगुना (Double) हो जाता है।

  • इसे हम 'तापमान गुणांक' (Temperature Coefficient) कहते हैं।
  • सरल भाषा में समझें तो, तापमान बढ़ने से अणुओं में ऊर्जा बढ़ जाती है, जिससे वे आपस में ज्यादा तेजी से और प्रभावी ढंग से टकराते हैं, और रिएक्शन तेज हो जाती है।

📚 About this Topic — General Awareness

This multiple choice question is from General Awareness, General Awareness (2024), General Awareness (2024)-8, SSC CGL Tier-1 (PYQs). It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from General Awareness to strengthen your preparation.

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