Which chemical symbols will complete the equation for this single displacement reaction? 2nabr + cl2 → 2 blank blank + blank 2

 The symbols  that will complete the  equation  for single  displacement reaction  is 2NaCl + Br2

Explanation

The  balanced equation is as below

2NaBr + Cl2→ 2NaCl  + Br2

A  single  displacement reaction is type of reaction in which  element  react with  compound  and take place  of other  element  in that compound.

Mostly the  more  reactive  element  displaces  the less reactive elements from its compound.

Chlorine (Cl2) is more reactive than bromine(Br2)   therefore  chlorine  displaces  bromine  from its  compound.

2Na Cl +Br2

Explanation:

first, consult an activity series chart to determine if al is more reactive than fe. it is, so it will replace the fe. now, one can continue with the problem.

next, make sure you have a correctly balanced equation.

3feo + 2al ==> 3fe + al2o3

now, determine which reactant (feo or al) is in limiting supply.

moles feo present = 125 g x 1 mole/71.8 g = 1.74 moles

moles al present = 25.0 g x 1 mole/26.98 g = 0.927 moles

since from the balanced equation, it take 3 mol feo for every 2 mol al, al will be limiting.

you can determine this simply by dividing moles of each by their coefficient in the balanced equation. for example: 1.74/3 = 0.58 and 0.927/2 = 0.464. al is less, so it is limiting.

finally, using the stoichiometry in the balanced eq. determine mass of fe that can be produced from 0.927 moles of al.

0.927 moles al x 3 moles fe/2 moles al x 55.8 g/mole = 77.6 g

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