Chemistry, 28.06.2019 18:00 wibi1963

In this reaction, what roll does the lead (ii) nitrate play when 50.0 ml of 0.100m iron (iii) chloride are mixed with 50.0 ml of 0.100m lead (ii) nitrate? a) lead (ii) nitrate increases the amount of precipitate. b) the reactant lead (ii) nitrate decreases product yield. c) lead (ii) nitrate is the excess reactant in the reaction. d) the lead (ii) nitrate is the reaction's limiting reactant.

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Answer from: bazsinghnagoke

D) The lead (II) nitrate is the reaction's limiting reactant.

Explanation:

$\text{no of moles of iron(III) chloride}={\text{Molarity}\times {\text{Volume in L}}$

$\text{no of moles of iron(III) chloride}={0.100M}\times {0.05L}=5\times 10^{-3}$

$\text{no of moles of lead nitrate}={\text{Molarity}\times {\text{Volume in L}}$

$\text{no of moles of lead nitrate}={\text{0.100M}\times {0.05L}=5\times 10^{-3}$

$2FeCl_3+3Pb(NO_3)_2\rightarrow 2Fe(NO_3)_3+3PbCl_2$

As can be seen from the balanced chemical equation, 3 moles of lead nitrate react with 2 moles of ferric chloride.

Thus $5\times 10^{-3}$ moles of lead nitrate react with $=\frac{2}{3}\times {5\times 10^{-3}}={3.33\times 10^{-3}}$ of ferric chloride.

$5\times 10^{-3}-{3.33\times 10^{-3}}=1.67\times 10^{-3}$ moles of ferric chloride will be left unreacted.

Limiting reagent is the reagent which limits the formation of product. Excess reagent is one which is in excess and thus remains unreacted.

Thus lead nitrate is the limiting reagent and ferric chloride is the excess reagent.

Answer from: Quest

that's just how they are

explanation:

you can't control another persons decisions, all you can do is ask that they respect yours. relationships are hard because you have to put the effort into making sure that another person feels seen, heard, and loved. as time goes on, it gets easier, you learn how to do these things without thinking. loving them becomes as easy as breathing, but every relationship will have fights, and sometimes it'll feel like you're drowning, but as long as you can talk it out and compromise, because that's truly what loving another person is, is compromise, then you'll be okay. movies and tv shows have glamorized and romanticized (pardon the pun) what a relationship would be like. real relationships aren't perfectly timed kisses in the rain, zero fights until one big one ends everything, 6 month anniversaries. real relationships are sleepy confused kisses when one person has to leave for work earlier than the other, real relationships are having small disagreements, real relationships are messy and confusing, real relationships is knowing that even if you're relationship may not last forever and this may not be the person you're going to spend the rest of your life with, that you love them, and you would do anything to see them happy. so yes, relationships are difficult, but so are many other things, relationships can be amazing but also stressful, and not just romantic i'm also talking about platonic relationships (although the primary example here was romantic) sometimes is best to leave friendships behind, so remember, always do whats going to you be happy in the long run.

Answer from: Quest

Alpha particles have positive charge, beta particles have negative charge, and answer 4 just doesn’t make sense. thus, you are left with only one possible answer.