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JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry

\(10\, mL\), \(2\,(M)\, NaOH\) ના દ્રાવણને \(200\,mL\), \(0.5\,M\) \(NaOH\) ના  દ્રાવણને  દ્રાવણમાં ઉમેરવામાં આવે તો અંતિમ દ્રાવણની સાંદ્રતા ................. \(\mathrm{M}\) થશે ?

  1. A \(0.57\)
  2. B \(5.7\)
  3. C \(11.4\)
  4. D \(1.14\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(0.57\)

Step-by-step Solution

Detailed explanation

From molarity equation \({M_1}{V_1} + {M_2}{V_2} = M{V_{(total)}}\) \(2 \times \frac{{10}}{{1000}} + 0.5 \times \frac{{200}}{{1000}} = M \times \frac{{210}}{{1000}}\) \(120 = M \times 210\) \(M = \frac{{120}}{{210}} = 0.57\,M\)
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