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What volume of 0.150 M KCl solution will completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation?
2KCl + Pb(NO3)2 ---> PbCl2 + 2KNO3
Okay so I was doing solution dilution problems with M1V1=M2V2 which is important for preparing diluted solutions in the lab or during the equivalence point, but then I encountered the above problem. I saw in the book they used a lengthy process to figure out the volume for KCl solution but I used a shortcut method. I used M1V1=M2V2. I of course got a different answer than the book. But I noticed that if I multiplied the answer by 2 I would get 0.350 L KCl(the answer)
I think I just figured out a shortcut method! I thought I would let others know because the trick is that in M1V1=M2V2 the moles don't change. But here, 1 mole of Pb(NO3)2 reacts with 2 moles of KCl so you would have to use stoichiometric coefficients to get the right answer corresponding to the reaction of the two reactants. I am not sure if this works for every problem, I just worked something out in my brain. Is my reasoning correct? Am I allowed to use this method?
2KCl + Pb(NO3)2 ---> PbCl2 + 2KNO3
Okay so I was doing solution dilution problems with M1V1=M2V2 which is important for preparing diluted solutions in the lab or during the equivalence point, but then I encountered the above problem. I saw in the book they used a lengthy process to figure out the volume for KCl solution but I used a shortcut method. I used M1V1=M2V2. I of course got a different answer than the book. But I noticed that if I multiplied the answer by 2 I would get 0.350 L KCl(the answer)
I think I just figured out a shortcut method! I thought I would let others know because the trick is that in M1V1=M2V2 the moles don't change. But here, 1 mole of Pb(NO3)2 reacts with 2 moles of KCl so you would have to use stoichiometric coefficients to get the right answer corresponding to the reaction of the two reactants. I am not sure if this works for every problem, I just worked something out in my brain. Is my reasoning correct? Am I allowed to use this method?
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