I have used dilute-IT to make a o.1N solution of HCl in .6 N NaCl after bringing the solution to the exact mark on the volumetric flask it lost volume do to off gassing, do I bring it back up to the exact volume?.
In this situation, it is important to consider the purpose and requirements of your experiment or analysis.
If your experiment or analysis requires a specific concentration of HCl and NaCl, then it is necessary to bring the solution back up to the exact volume that was initially intended. The loss of volume due to off gassing may have affected the concentration of both HCl and NaCl in your solution.
To bring the solution back up to the exact volume, you can follow these steps:
1. Determine the amount of volume lost due to off gassing. This can be done by carefully measuring the new volume of the solution.
2. Calculate the amount of additional solvent (e.g., water) required to bring the solution back to the desired volume. This can be calculated using the equation:
Volume of solvent to be added = Volume lost due to off gassing
3. Slowly and carefully add the calculated amount of solvent to the solution to reach the intended volume. Take note that you should use the same solvent used initially to maintain the desired concentration.
Once the desired volume is reached, mix the solution thoroughly to ensure uniformity. It is also recommended to check the concentration of HCl and NaCl using appropriate analytical techniques to confirm that the desired concentration has been achieved.
However, if the specific concentration of HCl and NaCl is not crucial for your experiment or analysis, then you may not need to bring the solution back up to the exact volume. It is still important to consider the potential impact of the volume loss on your results and to evaluate whether it falls within an acceptable range of error.