Answers

2014-05-18T13:44:44+05:30
NaNO3 ---------------------->Na+   +   NO3-
molarity of NaNO3 = molarity of NO3-
apply , M1V1 = M2V2 
M1 = 0.1 ,V1 = V ,M2 = ?  ,V2 = 2V
M2 = 0.1/2
      = 0.05M
hence option (3) is correct
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