One litre of water is added to 10 litres of a 40% solution of alcohol in water. What is the final strength of the alcohol

• given that intially solution is 10litre
  so,amount of alcoholin solution=10*40%=4 litre
  amount of water=10-4=6 litre
  now,1 litre water is added
  so amount of water=4+1=5 litre
  total solution=10+1=11 l1 litre
  so strength of the alcohol in the final solution=4/11(100)=36.36%
• 11 years agoHelpfull: Yes(5) No(0)
• since mass of alcohol will be same in both cases(density or molarity may be changed) so that
  d1 * v1 =d2 * v2
  i.e 40 * 10 = d2 * 11
  d2 = 36.36% answer
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• 11 years agoHelpfull: Yes(1) No(0)