In the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, if 6 moles of FeCl2 are added to 6 moles of NaOH, how many moles of NaOH would be used up in the reaction?

Question

In the reaction FeCl2 + 2NaOH  Fe(OH)2(s) + 2NaCl, if 6 moles of FeCl2 are added to 6 moles of NaOH, how many moles of NaOH would be used up in the reaction?

anonymous · Answer

6 moles?

anonymous · Answer

3?

anonymous · Answer

it'd be great if someone could help

jfraser · Answer

since the equation is already balanced, what's the mole ratio of FeCl2 : NaOH?

anonymous · Answer

i dont know

anonymous · Answer

i think the answer's 6.

jfraser · Answer

what are the coefficients in front of the FeCl2 and the NaOH?

anonymous · Answer

1 and 2

jfraser · Answer

so every time 1 unit of FeCl2 is used, how many units of NaOH will also be used?

anonymous · Answer

2

jfraser · Answer

In this case, you're starting with 6 of each of them. Will you use all 6 of both of them? No, one is going to run out first.

anonymous · Answer

idk i guess so

anonymous · Answer

In the reaction FeCl2 + 2NaOH  Fe(OH)2(s) + 2NaCl, if 6 moles of FeCl2 are added to 6 moles of NaOH, how many moles of NaOH would be used up in the reaction?

 		A.	6
 		B.	1
 		C.	3
 		D.	2

anonymous · Answer

3 is for fecl2 i think

anonymous · Answer

and since its 2, i think its 6 sinze 2x3 =6

anonymous · Answer

so is it 6?

jfraser · Answer

all 6 of the NaOH will be used, but only 3 of the FeCl2 will be used, you are correct

jfraser · Answer

but now i think you have a better understanding why

anonymous · Answer

thanks. i get it now. since it was 1 and 2 ratio