2N -> 0.1 HCL Calculation Check

[TCoach]

So, still thinking about saving money on my DIY KHD reagent. Currently I've been buying 0.1 N HCL from Amazon at ~$21 per liter. Better than GHL reagent, but still expensive. I see I can get 1L of 2N HCL for the same $21. So, I tried to do the conversion from 2 N down to 0.1 N and wanted to make sure my math is correct.

0.1N is 5% strength of 2N

So for a 1 L solution I should add 950 ml of RODI and 50mls of 2N HCL to make a 0.1N solution, correct?

If this math is correct, then I'll be cutting my reagent cost by 95% and making 1 bottle of 2N HCL into 20 L of DIY KHD reagent pr ~$1/L. :)

Thanks for the math/logic check.
-Chris

 

[KrisReef]

I hate math and chemistry math is even worse, but it seems good.

i wonder if Randy has a calculator for these things somewhere?

Gloves and googles when you are working with acids and I think you are supposed to pour the concentrated acid into the water, and not the other way around for splash reduction issues?

Hopefully the man will verify what I think is truly correct?

 

[KrisReef]

Well, he does explain it exactly different that I would have here

https://www.reef2reef.com/threads/check-my-math-on-solution-dilution-hey-i-made-a-rhyme.729616/

 

[Randy Holmes-Farley Verified Community Expert]

As noted, the math is correct. I'm not aware of a dilution calculator, but I'm sure there are some.