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A solution of ethanol in water is 1.6 molal. How many grams of ethanol are present in 500 g of the solution ?

Answer» <html><body><p></p>Solution :1.6 m solution would contain 1.6 <a href="https://interviewquestions.tuteehub.com/tag/moles-1100459" style="font-weight:bold;" target="_blank" title="Click to know more about MOLES">MOLES</a> of <a href="https://interviewquestions.tuteehub.com/tag/ethanol-975823" style="font-weight:bold;" target="_blank" title="Click to know more about ETHANOL">ETHANOL</a> dissolved in 1000 g of water. <br/> Molecular mass of ethanol `(C_(2)H_(5)OH) = 46` <br/> Mass of ethanol dissolved = `46 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> 1.6 = 73.6` <br/>g Total mass of solution = `73.6 + 1000 = 1073.6` g<br/> <a href="https://interviewquestions.tuteehub.com/tag/thus-2307358" style="font-weight:bold;" target="_blank" title="Click to know more about THUS">THUS</a>, 1073.6 g of solution contain 73.6 g of ethanol. Hence, the mass of ethanol present in 500 g of the solution `=73.6/(1073.6)xx 500 = 34.28 g`</body></html>


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