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Hi, how do I change 10% hydrochloric acid to 4% 01 Sep 2022 16:25 #76648

  • Ukmikhail
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How do I change from 20 percent to 4petcent hydrochloric acid, do I use distilled water

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Hi, how do I change 10% hydrochloric acid to 4% 02 Sep 2022 07:02 #76656

  • ButterBreath
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Should just be a straight dilution, and yes, definitely use distilled water, and always add acid to water (not the other way around) as the reaction is exothermic and can be excessive depending on the quantities and concentrations- think explosive boiling over all over your kitchen and all over you while you stand over it.

Acid into water- always.

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Hi, how do I change 10% hydrochloric acid to 4% 02 Sep 2022 15:21 #76660

  • stu77000
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How do I change from 20 percent to 4petcent hydrochloric acid, do I use distilled water


 

Yes, use distilled water.

Your title says 10% but your text body says 20%, which is it?

You can use this calculator to do the math. Scroll down to the Dilution Calculator PPM PPB Percentage
endmemo.com/bio/dilution.php

- To make 4% from 20% 1000ml HCl - you would add 1000ml of HCl to 4000ml of distilled water.
- To make 4% from 10% 1000ml HCl - you would add 1000ml of HCl to 1500ml of distilled water.

There is also a very useful app on the Google Play Store called Lab Hacks, it has a bunch of useful features including dilution.

Here is a copy and paste of another way of calculating it:

To create a 4% solution of HCl from a higher strength, you must divide the strength of the solution you have by 4 to determine how much you need to dilute your HCl. 
  1. Divide the strength of your solution by 4.
  2. If you have 35% HCl, divide that by 4% and you have 8.75 parts.
  3. 1 part has to be the 35% HCl and 7.75 parts is distilled water.
  4. So if you have 100 ml of 35% HCl (1 part), then you will need 7.75 parts x 100 ml = 775 ml of distilled water.
  5. Add the 100 ml of 35% HCl to 775 ml of distilled water and you will have 875 ml of 4% HCl.
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Last edit: by stu77000.

Hi, how do I change 10% hydrochloric acid to 4% 02 Sep 2022 17:30 #76663

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Always wear appropriate gloves and at least eye protection if not face protection.
A good mask or ventilator is probably a good idea, too.
With appropriate ventilation. (like outside or a fan blowing and an open window nearby)
Take care with children and companion animals.
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CHP – The Clean Health Protocol
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You will find info there regarding Jim Humble's "MMS Health Recovery Guidebook".

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