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

\(0.5\, M\, NaOH\) के \(250\, mL\) को \(1\, M\, HCl\) के \(500\, mL\) में मिला दिया गया है, अभिक्रिया पूर्ण होने के पश्चात विलयन में अनअभिक्रियत \(HCl\) अणुओं की संख्या \(\times 10^{21}\) है (निकटतम पूर्णांक में) \(\left( N _{ A }=6.022 \times 10^{23}\right)\)

  1. A \(226\)
  2. B \(235\)
  3. C \(462\)
  4. D \(521\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(226\)

Step-by-step Solution

Detailed explanation

We known that no. of moles \(=\text { Vlitre } \times \text { Molarity \& No. of millimoles }=V_{m l} \times \text { Molarity }\) \(\text { so millimoles of } \mathrm{NaOH}=250 \times 0.5=125\) \(\text { Millimoles of } \mathrm{HCl}=500 \times 1=500\)…
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