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Chemistry · Some Basic Concepts of Chemistry

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): One mole of glucose (\( \text{C}_6\text{H}_{12}\text{O}_6 \)) and one mole of water (\( \text{H}_2\text{O} \)) contain the same number of molecules. Reason (R): One mole of any substance always contains exactly \( 6.02214076 \times 10^{23} \) elementary entities. In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.

Correct answer · Option 1

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation

By SI definition, 1 mole contains exactly \( 6.02214076 \times 10^{23} \) entities, so 1 mole of any molecular substance contains this same number of molecules.
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