What volume of 0.750moldm -3 Na 2 CO 3 solution could be diluted to 250cm
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What volume of 0.750moldm-3 Na2CO3 solution could be diluted to 250cm3 to reduce the concentration of 0.025moldm3?
- A) 16.8 cm3
- B) 14.2 cm3
- C) 10.4 cm3
- D) 8.3 cm3
Correct Answer: D) 8.3 cm3
Explanation
Using dilution factor \(C_1V_1 = C_2V_2\)
Where \(C_1\) is concentration 1 in mol per dm\(^3\)
\(C_2\) is concentration 2 in mol per dm\(^3\)
\(V_1\) is volume 1
\(V_2\) is volume 2
Therefore it can be deduced as
\(0.750 \times V_1 = 250 \times 0.025\)
\(V_1 = \cfrac{6.25}{0.75}\)
\(V_1 = 8.333\) cm\(^3\)
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