Australia's Science Forum

Having a mental blank.
The old Ammonia bottle we had was 10%.
On the new bottle we purchased says Ammonia solution 18%. How much of the 18% Ammonuia do I need to make a 1M solution?
Thanks

According to a source - Ammonia at 25% is 13.4M . Does that help?

Divide the ammount of ammonia by 18 and multiply by 10. ie if 190ml of 10% needed for 1M, 190 div by 18 x 10 = 105.5 ml . This is what I would do, and hope the maths is correct.

Mine is sp.gr.0.91 and about 25%. It depends what it's for. I usually do (from my recipe book) 112ml of 0.88 into water up to 1 litre for 2M=2N. This I take for 1M to be about 56ml up to 1L. (also what The Laboratory says). 18% is roughly 3 quarters so non analytically how about 56ml up to 750ml. This is very rough as I am suffering the brain function of a newt at the moment.

On this site is a thread " Solutions" go there and download the document . it has your answer

If bucket chemistry is good enough dilute 100ml of ammonia to 900ml of water.
Lada

Thanks everyone