Double Displacement Reactions

[megahawk49]

Can u also switch the non-metals? instead of only metals. r metals given more preference over non metals?????

[13798520dl]

Explanation is AWESOME! Love the semi-formal scenario animation :)

[loltotallyrolled25]

LMAO the first equation you did pb(NO3)2 + KI was my exact problem that i needed help with sweet! haha

[richardwang1007]

You need to speak up a bit. Nice tuts. though!

[Hamza420G]

Thanks man. I just had my first college level chemistry class and I was totally lost, this explanation MAKES SENSE! Lol :P

[seantabler]

whats the 5 step cross over rule ?

[Papapodcasts]

@seantabler Check out my lesson on naming and writing formulas for ionic compounds. That's where I introduce the 5-step cross over rule.

Mr.P

[prettyhall1]

So how would I write the complete balanced reaction and products of.... HCl + calcium hydroxide

[Papapodcasts]

@prettyhall1 Check out my video called neutralization to help you with this question.

[prettyhall1]

so how would I complete the balanced reaction of... HCl + calcium hydroxide

[pocketfizz]

I think you just saved my science mark.

[MultiNerve]

If both reactants are soluble in water, does that result in a No Reaction?

[Papapodcasts]

@MultiNerve Yes its true.

[fayethailand]

you are seriously the best chem teacher. i hate science so much. youre making wanna take ib chem but i know its gonna be way too hard. i like doing this kinda stuffs. a little bit of math involved. you are such a good teacher. i have test tmrw on reaction types, and balancing stuffs. we've been learning chapter 8 for a week now. i didnt pay attention in class at all. i was always like'oh ill just gonna study at home' and i never did. you vids are so helpful. thank you so much!!!!!!!!

[Monicawellness1]

i wish my teacher was like you

[ligerspider]

You man, are a boss

[cuilboy001]

one week of chemistry in 6 minutes thank you

[cuilboy001]

one week of chemistry in 6 minutes

[VivaGlamCouture64]

can you please teach my teacher how to teach? :)

[Iamorton]

you the best, why don't school system be like this?

[tinifly650]

THANK YOU SO MUCH!!! these are SO helpful

[tinifly650]

THANK YOU SO MUCH!!! very helpful

[shadowkunai12]

I like these :] helps me understand chem more.

[christiano241525]

Anyone know how to do: hydrogen sulfide reacts with lead IV bromate. Someone help please!

[justing224]

displacement is the same as replacement right? m teacher calls it by that

[candchocookie]

thank you so much for all your videos! :) You don't know how much they mean to me. I really really hope you were my teacher... Seriously. :D I'd be failing without your videos. Please don't ever stop doing them. :) Thanks so much. :)

[orangegold1]

Thank you!

[m4uls]

Thanks!

[TheHeidi2024]

thank you thank you thank you

[mdjk89]

some one please email me, in 6:11 why did the two drop of Phosphate

I thought it be Ca(CIO3)2 +Al(PO4)2 and then you balance

im confuse help asap!

[Papapodcasts]

Look over your crossing over steps. Aluminum has a +3 charge as does PO4, so the end result is AlPO4. Check out my lesson on Polyatomic ions.

Mr.P

[Papapodcasts]

Check out my video titled: Reactions of Aqueous Solutions Sample Problems

This will shed some light.

[blondii7794]

How would you put your answer into a ionic equation and a net ionic equation?

[Papapodcasts]

Check out my video titled: Net Ionic Equations and Spectator Ions

That should help you with net ionic equations.

[steroids165]

ur amzaing man!!!

[cpatuti]

Your videos are amazing and they have helped me so much to understand chemistry, i have a really bad chemistry and math teacher and im in grade 11 and i was wondering if you tutor ?

[clonewolf4]

Thanks for everything. Correct me if Im wrong, but I don't think that you used the crossover rule for the magnesium sulfate. Because it should have been Mg(PO4)2, I think.

[Papapodcasts]

You must always use the crossover rule when dealing with metal non-metal compounds (ionic). Mg has a +2 charge and SO4 has a -2 charge, so they will both cancel out.

[dangerdon128]

THanks alot sir this is really helpful infact i dont understand much in class than here!!! thanks again

[bush1a]

THX SOO much for ur video its sooo discriptive it helps alot thx ALOT ^_^

[mel082186]

Sir why is it in ur last example is you did not criss cross Al to phosphate?

[Papapodcasts]

Thanks for watching. Al did cross over with phosphate. Originally Al was with carbonate. Best of luck with your studies.

Mr.P

[Iz7zI]

What makes an (aq)?

[Papapodcasts]

Aq = aqueous.  It means the substance was dissolved in water. Thanks for watching.

Mr.P

[MoeWoW0]

Hey does the aactivity rule affect double disp?

[Papapodcasts]

It doesn't. The activity series is primarily for single displacement

[NashNitro]

could you please turn the volume high? because I can't here nothing!

[lovelylatina207]

Hi

I was wondering if you have a video on the 5 step cross over rule.

Thank you

[Papapodcasts]

Hey there,

thanks for watching, check out my video called "Writing Formulas For Binary Ionic Compounds". This video looks at the 5 Step Cross over rule. Good luck with it.

Mr.P

[lovelylatina207]

Thank you so much for making these videos and letting everyone watch them!!The videos are really helping me in my Chem class.

best wishes

cynthia

[dragonxneo]

For your first example of balancing the double displacement of Pb(NO3)2 + KI -> KNO3 + PbI2. I was wondering why it was "PbI2" when Pb also has a charge of +4, why is the +2 charge used instead?

[itzkelliexwb]

hey, how am i suppose to cite this??

lol...im using your info, but i dont know how to cite my sources,,,,=/

[Papapodcasts]

The source I used is called Sciencepower 10. Are you working on a lab? What part do you need sources, maybe I can help. Perhaps you can cite me as an instructor. Thanks for watching, best of luck with your studies.

Mr.P

[SkaterNewbGurl]

And happy new years!

[SkaterNewbGurl]

thank u : )!!O and, when a neutralization reaction occurs, what would it look like? ( lab wise) salt and water forms, is salt a percipitate?

[Papapodcasts]

Salts are not considered precipitates. To identify ppt, you'd want to test it out in the lab.

Ex: Aqueous silver nitrate (AgNO3) is added to a solution containing potassium chloride (KCl) and the precipitation of a white solid, silver chloride is the final result.

AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3 (aq)

[SkaterNewbGurl]

And suppose we are doing this as a lab. The thing that percipitates out, how do we know what that percipitate is? Do we test it? ????

[SkaterNewbGurl]

I have a question!!! Man this chemistry thing is killing me!

Suppose that you did not have any information about the solubility of carious compounds but you did have access to a large variety of ionic compounds, What would you need to do before predicting the products of the displacement reactions above? Outline a brief pocedure.

MgCl2

NaOH

FeCL2

and a whole bunch etc etc.

So do we first mix them together and what percipitates out has low solubility level?

[Papapodcasts]

When predicting the products, solubility is not important 2 know. 1 of the key components u need 2 know are the reactant ionic or polyatomic. If so, the products will be a combination of the metals switching places w/ one another (what u would find in a dbl displacement rxn). If the rxn appears 2 go towards sngl displacemnt rxn then u would want 2 make sure 2 look @ the metals of the Activity Series 2 see if the single metal will displace the metal in the ionic compound of the other reactant

[SkaterNewbGurl]

I have a question!!

for

MgCl2 + AgSO4 = AgCl +MgSO4 before balancing, why isnt the reactant for MgSO4 be Mg(SO4)2 because of the cross over rule.

[Papapodcasts]

Hey there,

The reason for that is because Mg has a +2 charge and SO4 has a -2 charge. The 2:2 ratio with simplify to 1:1 thus making the formula MgSO4

Mg+2 (SO4)-2 - cross over and remove charges

Mg2(SO4)2 - simplify

Mg1(SO4)1 - remove the 1's

MgSO4

Good luck with your studies and have a Happy New Year. Thanks for watching.

Mr.P

[Papapodcasts]

Thank you for your kind words. Good luck with your studies.

Mr.P

[a1a2b3c4d5e6f]

Thanks Mr. P, you are really great, I wish teacher had the ability to explain like you, or explain at all.Again, thanks.