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+ Precipitation
+ Chemistry
+ Hydrochloric acid
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Manuel

Why does HCl cause precipitate?

Doctor Lee  Follow

I suppose the simple answer is that a reaction occurs that results in a relatively insoluble product - which then promptly refuses to be in solution and settles out as a solid.

So soap dissolves in bath water but in a hard water area calcium in the water forms an insoluble scum which precipitates out. The soap might typically be sodium palmitate and calcium palmitate is the scum that forms.

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Anders Wahlberg  Follow

The only conclusion that I can come to is that the solutin does not contain any cations that produce insoluble chloride salts.

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Bruce Heath  Follow

Clouds are aggregate of water droplets and ice particles. Till the time they remain positively buoyant or lighter then the opposing gravity, they remain in floating state in the air. But when the size of drops become larger through various atmospheric processes, they no longer remain lighter. Means the gravity overcomes the positive buoyancy and they fall on ground as rain, hail or snow.

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Anussukee Wijegunarathna  Follow

“Plastic” is a dozen or more different substances. Some are pretty resistant to HCl, others not so much. In particular, I’d recommend keeping it away from PET and polyamides like nylon, as Terry Knapp’s answer indicates.

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Basecrete Global??  Follow

Group 1 cations, Pb^2+, Ag^+, Hg2^2+ are precipitated as their chlorides by dilute HCl. It is because, their ionic products exceed the solubility products.

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Caleb Brunson  Follow

That would depend on the amount of materials blended. BaCl2 has a solubility of 35.8 grams per 100 mL of water at 20 degrees Celsius. So BaCl2 is one of the more soluble barium compounds

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Andy Carnduff  Follow

First it's soluble in water just like NaCl and KCl… note that these 3 cations H+, Na+ and K+ do not form precipitate at all unlike Ca2+, Zn2+, Al3+ etc. This is why HCl, NaCl and KCl are used to precipitate insoluble chlorides.

Moreover, it's the Cations of lower metals that forms precipitates with chloride ion of the HCl..Cations such as Pb2+, Act will form precipitate with HCl. So it's not the HCl itself but because the chlorides of Pb and Ag are insoluble. They are prepared as precipitates and extracted from solution through filtration

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Nigel West  Follow

HCl(aq) causes precipitates if it is added to an aqueous solution that contains cations such as Ag+, Pb2+, and Hg2^2+, that form insoluble chlorides.

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Donna J. Nichols-Lawrence  Follow

Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It occurs due to temperature differentiation.

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Alan Feldman  Follow

When it loses its solubility in the solvent. One example i am aware of is sulfamic acid. It has very little solubility in water so, we can get precipitation easily by playing eoth temperature.

Sulfamic acid= NH2-SO3H

https://en.m.wikipedia.org/wiki/Sulfamic_acid

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