Oh, my apologies, I am mistaken. Thank you.

Quote from: Avian on Yesterday at 07:46:58 PM

If I touched some of this "dried" sulfuric acid could it have burned me since hands are moist?

No.

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Would it have been obvious?

Yes.

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Would the spots I walked on have transferred to my shoes and could that have burned me when I took my shoes off?

No.

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If it did start burning my hands would it transfer to things I touched throughout the day?

No.

Or, more precisely, if it would start burning first thing to do is to wash your hands with copious amounts of flowing water. After that any acid present would be rinsed and there will be none left.

Quote from: Avian on Today at 02:11:54 AM

So is it getting diluted from the water in the air?

A bit. It also dries up, so even if accidentally spilled and not cleaned up it won't stay there forever. As long as these are stains and not poodles there is nothing to worry about.

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Even if I got some trace amounts on my skin would the other day would it not be a huge issue?

No.

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The scariest thing for me having a chemical phobia is the idea of it contaminating everything I touch and getting burns over and over when

It doesn't work this way, don't worry.

Thanks for answering! 

https://en.wikipedia.org/wiki/Atomic_radius

factor - nuclear charge - attractive force acting on electrons by protons in nucleus - increase along each period (left to right) - decreases the atomic radius

Positive charge will even increase this factor in favour of Sr²⁺.

Hi all,

I was wondering why the potassium ion (K+) is larger than the strontium ion (Sr2+). From my understanding, the addition of the n=4 electron shell should result in the strontium ion being larger. However, that is not the case. I think the difference has something to do with the additional two protons in strontium 2+ relative to it's nearest noble gas Kr (K+ only has one additional proton commpared to Ar).

However, without searching up the atomic radii (or anything outside of what's in the periodic table), how can I compare the radii of two ions with different charges like K+ and Sr2+?

Thanks!

Dried sulfuric is not stable to get still dry. It absorbs water and it get more dilute. What you see on floor and table is etching damage. Normally if the chemicals are spilled there are removed and the items are cleaned and washed. But the damage will be remain. So dont worry.

Thanks for the reply.  Do you know if it transfers from person to object?  If I grabbed some keys from someone who was touching a bottle had sulfuric acid spilled on it long ago would the acid go from his hands to the keys and then burn my hands?  I am probably overthinking things but that would be the scenario where I was most likely exposed.