Assertion: One mole of NaCl contains 6.023 × 1023 molecules of sodium chloride. Reason: 58.5 g of NaCl also contains 6.023 × 1023 molecules of NaCl.

Question

Assertion: One mole of NaCl contains 6.023 × 1023 molecules of sodium chloride. Reason: 58.5 g of NaCl also contains 6.023 × 1023 molecules of NaCl. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Molar mass or mass of 1 mole of NaCl

= 23 + 35.5 = 58.5 g
According to mole concept,
1 mole of molecules = Gram molecular mass

= 6.023 × 10²³ molecules
∴ 58.5 g of NaCl also contains 6.023 × 10²³ molecules of NaCl.

Q. Assertion : One mole of NaCl contains 6.023 × 1023 molecules of sodium chloride. Reason : 58.5 g of NaCl also contains 6.023 × 1023 molecules of NaCl.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Molar mass or mass of 1 mole of NaCl = 23 + 35.5 = 58.5 g According to mole concept, 1 mole of molecules = Gram molecular mass = 6.023 × 1023 molecules ∴ 58.5 g of NaCl also contains 6.023 × 1023 molecules of NaCl.

Q. Assertion : One mole of NaCl contains 6.023 × 10²³ molecules of sodium chloride.
Reason : 58.5 g of NaCl also contains 6.023 × 10²³ molecules of NaCl.

Molar mass or mass of 1 mole of NaCl
= 23 + 35.5 = 58.5 g
According to mole concept,
1 mole of molecules = Gram molecular mass
= 6.023 × 10²³ molecules
∴ 58.5 g of NaCl also contains 6.023 × 10²³ molecules of NaCl.