in a solution NaOH is 12% of total mass.its density is 1.131gram per ml.what is the value of that volume which keep 5 mole of NaOH?
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Expert's answer
2017-06-30T11:23:06-0400
Percent concentration by mass is defined as the mass of solute divided by the total mass of the solution and multiplied by 100%. So, c %=m_solute/m_solution ∙100% msolution=msolvent+msolute
The molecular weight of NaOH is 40 g/mol. Thus, the mass of NaoH is m_solute=40 g/mole∙5 mole=200 g The total mass is m_solution=(200 g)/(12 %)∙100%=1667 g The volume is V=ρm_solution=1.131∙1667=1885 ml
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