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An aqueous solution with NaOH 10 g/L at the rate is 100 L/min and an organic compound with no NaOH at the rate 50 L/min were put into an extraction machine and produced aqueous solution with NaOH 1 g/L, what is the amount of NaOH in organic compound after extraction?
If pH of solution of NaOH is 12.0 the pH of H2 SO4 solution of same molarity will be?
A 60% spirit solution is mixed with r% spirit solution in the ratio 1 : 3 such that a s% spirit solution is obtained. When a (s/3)% spirit solution is mixed with 55% spirit solution in equal ratio, an (r/2)% spirit solution is obtained. Which of the following can be determined? (A) Value of ‘r’ (B) Value of ‘s’ (C) Volume of the 60% spirit solution mixed initially (D) If 9 liters of r% spirit solution was mixed initially, what was the volume of the s% spirit solution thus obtained?
A chemical solution appears green when the salt concentration is 8 grams per litre (gpl) and red when it is 10 gpl. Pure water was added to the solution of 1 litre of 15 gpl solution till it turned green. Then 125 ml of the green solution is taken out and x grams of salt is added to the green solution to make it red. Another 500 ml of the final solution was taken out and y litres of green solution is added to get a resultant solution of concentration 9.6 gpl.  Assume adding salt doesn’t change its volume and find the ratio of x and y. 
What is the molarity of 20% (w/v) H2SO4 solution?
What is the molarity of 245.0 g of H2SO4 dissolved in 1.000 L of solution?
একটি লঘু H2SO4 মিশ্রিত 15 15 cm2 আয়তনের 0.3 M KMnO4 দ্রবণ দ্বারা 25 cm3 অায়তনের H2SO4 কে জারিত করে। এ দ্রবণে H2SO4 এর মোলার ঘন মাত্রা কত হবে?
1000 mL 1 N H2SO4   এর দ্রবণ তৈরি করতে 98% H2SO4   এর কত মিলিলিটারের প্রয়োজন হবে? [H2SO4   এর ঘণত্ব = 1.8 g /cc]
10 cm3 H2SO4    এর একটি দ্রবণকে সম্পূর্ণরুপে প্রশমিত করতে 0.1 M NaOH দ্রবণের 8.0 cm3 লাগে।  H2SO4   দ্রবণটির ঘনমাত্রা মোলারিটিতে কত হবে?
একটি  H2SO4  দ্রবণের   10cm3 পরিমাণকে সম্পূর্ণ প্রশমিত করতে 0.1 M NaOH দ্রবণের  8cm3     প্রযোজক হয়; H2SO4  দ্রবণের মোলারিটি কত?