Equal volumes of 0.1M AgNO3 and 0.2M NaCl are mixed. The concentration of NO-3 ions in the mixture will be
In this the NO3- ions are coming from the compound AgNO3.And its normality aswell as molarity will be 0.1 in magnitude.
When it free its(NO3-) concentration = 0.1 M
But the equal amount of another is added , we know that concentration is inversely proportional to volume. When volume is doubled means concentration will be halved.So required concentration = 0.1/2=0.05
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