Question

What are the coefficients used to balance the following equation, AlCl3 + Ca --> CaCl2 + Al.

Answer 1

(2/3)AlCl3 + Ca --> CaCl2 + (2/3)Al

Answer 2

you can multiply by 3 throughout if you prefer integers

Answer 3

both are correct though

Answer 4

Well... In Hess' Law, fractional coefficients are ok because you are calculating enthalpy,
ΔH
. In reality, we can't get fractional amounts of molecules, only fractional moles :P

P.S. This goes in Chemistry!! >.<

Answer 5

not really

Answer 6

you are forgetting that we are using mole ratios in the equations. 1 mole is just the avogadro's constant

Answer 7

so you wont get fractional molecules or what not, most of the time.

Answer 8

this is confusing so the coeficients are 2/3 and 2/3 ?

Answer 9

{i need to stop second-guessing myself}

Well, you can use 2, 3, 3, 2 if you prefer (and I still insist it would be best)

Answer 10

because i got 2332 and got it wrong haha

Answer 11

oh wait

Answer 12

i multiplied wrongly

Answer 13

i mean 2323 sorry thats why i put and got it wrong

Answer 14

2 3 3 2... again i multiplied wrongly....

Answer 15

(2/3)AlCl3 + Ca --> CaCl2 + (2/3)Al

multiply all by 3 if you prefer integers.

you will get

2AlCl3 + 3Ca --> 3CaCl2 + 2Al

Answer 16

sorry for the confusion. Using (2/3) as coeeficients are correct. But multiplying them to get integers are what I would call aesthetics

Answer 17

so the answer is 2332 those are the coeficients

Answer 18

As to how i got 2/3 as the coeeficients,

first i balance the number of Cl.

reactant has 3 while product has 2

using maths, to make the 3 into 2, i multiply 3 by 3/2

Answer 19

multiply 3 by 2 / 3 i mean

Answer 20

that would mean i have 2/3 moles of Al in reactants. Product has 1. So, multiply Al in product by 2/3 and it is balanced

Answer 21

thanks it was correct thank you guys for ur help :D