As part of the cousework - we have been asked to create our own concentrations with hydrocloric acid and react with Magnesium (gar produced). I just want to check these workings: and can someone tell me if I an correct or incorrect:
Lets say I have 1M HCL
I ahve a 200ml volumetric flask
To create 0.2M - I would split the 200 by 10 parts - 2 parts of HCL - the other 8 parts of Pure Water
Each part in this case would be 20ml - a pittette would do that.
For 0.4, it would be 4 parts acid, 6 parts pure water
for 0.6M 6 parts acid, 4 parts water
0.8M 8 parts acid 2 parts Water.
and 1M it would be silly to use pure water
If one or two people could comferm my workings, that would be great.
one other thing - the glass syniges - they often get stuck and reck the results (as one person found out when the stopper of the experiment went out the window at high velocity as of a gas pressure buildup). Is there any way to make these less stiff, or is there another apperatous to use?
thanks you very much