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.

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

Explanation:

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

Thus moles of lead nitrate react with of ferric chloride.

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.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.