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Question
500ml দ্রবণের মধ্যে কি পরিমাণ Na₂CO₃ দ্রবীভূত থাকলে তা নরমাল দ্রবণ হবে?
13.25g
26.50g
62.50g
53.0g
ANSWER : 2
Descrption
<p>Na<sub>2</sub>CO<sub>3</sub> এর তুল্য ভর = 106/2 = 53</p><p>নরমাল দ্রবণ,</p><p>1L=1000mL দ্রবণে 53g Na<sub>2</sub>CO<sub>3</sub> দ্রবীভূত হয়</p><p> 500mL “ (53×500)/1000 ” “ ”</p><p> = 26.50g</p>
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