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A solution contains 20 g of sodium chloride in 95 cm^(3) solution. The density of solution is 1.25 "g cm"^(-3). What is the mass percent of NaCl ? |
Answer» <html><body><p><br/></p>Solution :Density of <a href="https://interviewquestions.tuteehub.com/tag/nacl-572483" style="font-weight:bold;" target="_blank" title="Click to know more about NACL">NACL</a> solution `= 1.25 "<a href="https://interviewquestions.tuteehub.com/tag/g-1003017" style="font-weight:bold;" target="_blank" title="Click to know more about G">G</a> cm"^(-3)` , Volume of solution `= 95 cm^(3)` <br/> <a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a> of solution = volume `xx` density `= ("95 cm"^(3))xx("1.25 g cm"^(-3))=118.75`g <br/> Mass <a href="https://interviewquestions.tuteehub.com/tag/percent-1150333" style="font-weight:bold;" target="_blank" title="Click to know more about PERCENT">PERCENT</a> of NaCl `= ("Mass of NaCl")/("Mass of solution")xx100` <br/> `=((20g))/((118.75g))xx100=16.84%`.</body></html> | |