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300 gm, `30%`(w/w) NaOH solution is mixed with 500 gm `40%`(w/w) NaOH solution. What is `%` (w/v) NaOH if density of final solution is 2 gm/mL?A. 72.5B. 65C. 62.5D. None

Answer» Correct Answer - A
% (w/v) volume of NaOH`=((300xx0.3+500xx0.4)/(800))/2xx100=72.5`


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