NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions

Question : 25

Total: 36

How are 0.50 mol Na2CO3 and 0.50 M Na2CO3 different?

Solution:

1 mol Na2CO3 = 2 × 23 + 12 + 3 × 16 = 106 gmol–1
0.50 mol Na2CO3 = 0.50 × 106 = 53 g
0.50 M Na2CO3 solution means that 0.50 moles or 53 g of Na2CO3 are dissolved in 1000 mL of solution.

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