250 ml of a sodium carbonate solution contains 2.65 grams of $\mathrm{Na_2CO_3}$ If 10 ml of this solution is diluted to one litre, what is the conc...

Question

250 ml of a sodium carbonate solution contains 2.65 grams of $\mathrm{Na_2CO_3}$ If 10 ml of this solution is diluted to one litre, what is the concentration of the resultant solution? (mol wt. of $\mathrm{Na_2CO_3}$ = 106)

**Options:**
- **A.** [object Object]
- **B.** [object Object]
- **C.** [object Object]
- **D.** [object Object]

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**Difficulty:** MEDIUM | **Chapter:** Mole concept | **Topic:** Concentration terms: molarity, molality, ppm, etc.

Accepted Answer

## ✅ Correct Answer: **B**

### 📖 Detailed Explanation:
This question uses mole concept & particle counting. Relate mass, moles and number of particles using the mole concept and basic stoichiometry; doing the algebra gives the value listed in option B.

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250 ml of a sodium carbonate solution contains 2.65 grams of \(\mathrm{Na_2CO_3}\) If 10 ml of this solution is diluted to one litre, what is the conc...

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