reaction of LEAD NITRATE & POTASSIUM IODIDE solutions

[sanrofamilyful]

is this an example of precipitate?

[poprockmeli]

what new compounds were formed?

[conjam32]

what type of reaction is this ?



[poprockmeli]

@conjam32 double replacement

[SaideKane]

for chemistry, we did this as well, but we had to stir the chemicals for 10-15 sec until it turned yellow.... do you know why??

[iraqigirl10]

i have a chemistry question can any one help me with please and thank u

the question says:

can a reaction accur between barium nitrate and ammonia iodide??

[SilentWalrus74]

When I did this in chemistry, we poured two test tubes into a beaker, one with each solution in it. The water was room temperature, so right when they met in the beaker, the two solutions instantly turned into a thick yellow paste. It was awesome.

[Dukster98]

are both end solutions aqueous?? The lead Iodide and the potassium nitrate?

[JuancpFCEN]

Golden Rain. The most beautiful inorganic reaction.

But my favorite is thermite Fe2O3 + Al > Fe + Al2O3

[sexygirlfromja]

im in 10th grade && we're doin this... #Not fairr

[Twilightsucks1000]

Can this experiment give you cancer?

[JuancpFCEN]

@Twilightsucks1000 Read the lead iodide MSDS

[AresExodus]

We did this for the last lesson of chemistry, with a light shining through it, it looks the most amazing reaction in the world

[redemptous]

Potassium , K, is more reactive than lead so it knocks it out of its compound with nitrate, and lead then combines with iodine. Since this is an insoluble compound it precipitates out and is immediately detected due to its yellow colour. Potassium nitrate is soluble.

This is a double displacement reaction.

[PoppyJuliaJane]

@gosenskat

we did this in year 8... awkward.

[gosenskat]

This was banned from my old school because apparently lead is too dangerous for grade 12 students. -.-'

[douro20]

@gosenskat

The lead scare will get us all one of these days...

[47blakgreasez]

i still like Football!!!!!!!!!!!!!!!!!!! kuz

[ThePLOWBOY34]

your not subs post to smell chemical reactions

[00Mj000]

what does the product smell like?

[MMubasher10]

@vmelkon yeah....i read a proper equation of this reaction after watching this video and came to know that potassium nitrate is aqueous.......any way thanks for replying.... :)

[47blakgreasez]

I Like Football. :D

[soccerpianodude]

how much the volume change in the solution?

[MMubasher10]

Hey, Its pretty good, but i have one question. Where does the potassium nitrate go?

There was only a yellow precipitate of lead iodide. Please help me!

[vmelkon]

@MMubasher10 Here's a hint. Most group I compounds are solution in water.

[omgitzdblackbetpwner]

@MMubasher10 The Potassium nitrate is in the water, it is aqueous. This means that it is split into K+ and NO3- ions (Potassium nitrate is KNO3). The water is causing them to be split up, if you were to remove the water then the ions would form the ionic compound potassium nitrate.

[Mshetty313]

this is the stuff that makes chalk

[chaOsMastaGuru]

I bet if you did this in a large clear tank, then flipped it upside down, you could use if for special effects :P Riot gear anyone?

[Legoking45]

oh mna, my teacher did this last year in 9th grade science. Very fun to watch the yellow precipatate ;)

[dommmx0x]

this video totally saved my ass. i didnt pay any attention while we did this lab & we have a test on it tomorrow. thank you :)

[whizzmaster3000]

I wish i could do this---

i don't have any of the ingredients to make this stuff, so i just whatch it on here :(

[satan2704]

I loved doing this in Chemistry!!!! :D

It was childish though... ¬3¬

Because eveyone saw the yellow precipitate and was like 'OMG!!!! YELLOW STUFF!!!!' :D

[catloverfan]

LMFAO saaame here.

[zoeymegmeg]

@satan2704 When I did this in chemistry, it was such a small amount it looked a lot like paint. But... really old paint...

[Alin19862007]

well, as you know, potassium iodide is solid,and you have to disolve it in some water. After the reaction had taken place,and the KNO3 is formed,it disolves in that water,so you get KNO3(aq)

[Danny19921125]

Try barium nitrate (Ba(NO3)2) and potassium sulfate (K2SO4) or sodium hydroxide (NaOH) and nicke(II) chloride (NiCl2). I see before is nice reaction. :)

[beenstaa]

We did this in chemistry today it was really cool, but we only used small test tubes... this looks awsome :)

[maxyevs]

Ah my chemistry teacher did the in class... lead is too heavy to stay in solution...

[MariusSemeonOrtiz]

what is the formula for a Pb ion? I looked for it in google, wikipedia etc. but cant find it. It's in period 6, Group IV so i assum it is Pb2+ but i'm not sure....

[somy4life]

whr do u get potassium iodide?

[Petiahappy]

the products are lead Iodide and Potassium nitrate, right? which one is yellow..the lead iodie or the potassium itrate?

[Basco36]

lead iodide is yellow.

[Scraleontis]

but then what happens to the KNO3

[maxyevs]

it stays dissolved- nitrates always dissolve

[syk619]

@Basco36 but i thought lead always give a white precipitate?

[DeanMalenko]

@Basco36 lead is always connected to the color yellow :D even lead glass is yellowish/orange

[deadlock361]

@Petiahappy i have never seen lead iodide but i have seen potassium nitrate. it is white ,so the yellow percipitate must be the lead iodide

[adriankocian]

on this vid, did you add Pb(NO)3 to KI or KI to Pb(NO)3. just for fun :D:D:D

[maxyevs]

he added lead nitrate to potassium iodide

[daiviko]

thats the problem in the book i dont know how to do.

[Basco36]

me neither

[daiviko]

hey i'm doing my AP chem homework and came across this video. I am a little confused. Calculate the volume of 0.5M potassium iodide required to react completely with 50.0 ml of 0.5M lead nitrate

[Basco36]

I dont understand, what are you confused about?

[sn00piedog]

what are 2 properties that the potassium and lead nitrate make when their together? I can only think of 1 the bright yellow colour my teacher wants to know it's homework

[chaOsMastaGuru]

well, it's a bit late to reply now :P but I guess you could say there's a precipitate of lead iodide

[sn00piedog]

thanks but I don't have sience this semester :)

[chaOsMastaGuru]

hehe, but I do :P

[sn00piedog]

lol

[StillRottenToTheGore]

@daiviko

I know this was 2 years ago, but here's your answer:

Eq: 2KI + Pb(NO3)2 -> PbI2 + 2KNO3

Convert to moles:

(.5M Pb(NO3)2)(.05) = .025 moles.

.025 x 2 (molar ratio between Lead(II) Nitrate and Potassium Iodide = .05 mol.

.05/.5 = .1 L = 100 mL of KI.

[ch3rryp3psi]

ahh, so it was LEAD nitrate!

thank you for this vid :D

[simpsonstewie]

blond: thats just hollywood that can't happen for real

me: go f your self. Lead Nitrate reacts with potassium iodide to make a precipitate of lead iodide and potassium nitrate

[stealthsuitVX20]

nice

[andreichikachika]

Beautiful precipitate. Great video!