When a solution of 6m hcl is made from a stock of concentrated hcl by adding an equal volume of water, why is the concentration of the solution only an approximate concentration?

-

HCl is a volatile acid. It easily evaporates at room temperature. So the concentrated HCl which is supposed to be 12 M is no longer 12 M since some of the HCl has already escaped as vapor.

Hence when a solution of 6M HCl is made from a stock of concentrated HCl by adding an equal volume of water, the concentration of the solution is only an approximate concentration since the concentration of the stock concentrated solution is also approximate.

Some of the HCl is lost as vapor and the concentration obtained by dilution is only an approximate concentration.

The concentration refers to the amount of substance present. The stock solution is the solution from which the more dilute solutions are prepared.

We have to note that concentrated HCl from which the dilute solutions are prepared is volatile. As such, some of the HCl is lost as vapor and the concentration obtained by dilution is only an approximate concentration.

Learn more about concentration. link

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

here are the traits of a good leader.i'm not going to give you the examples so you can copy right it.that's illegal but i hope that this you out.

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms