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Studentka2010 [4]
3 years ago
12

If A + B → C + D You start with 50 g of A and 30 g of B and 40 g of C are produced, how many g of D would also be produced?

Chemistry
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:40g of D

Explanation:

Law of conservation of matter:

Matter can neither be created nor be destroyed but can change from one form to another.

The total of the reactants must be equal to that of the product.

A+B=>C+D

50g+30=40g+D

80g=40g+D

D=80-40

D=40g

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Ni2+(aq) + 6 NH3(aq) ⇌ Ni(NH3)6 2+(aq)
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Answer:

a) ΔGº= -49,9 KJ/mol = - 50 KJ/mol

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a) ΔGº= - RTLnKf

You need to convert Cº to K. 25ºC=298K

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b) The ΔGº < 0, that means the direct reaction is spontaneous when te reactive and products are in standard state. In other words the reaction goes to the right, to formation of products

c) The general ecuation for chemical reaction is aA + bB → cD + dD. Thus

ΔG=ΔGº + RTLn (([C]^c*[D]^d)/[A]^a*[B]^b)

In this case,

ΔG=ΔGº + RTLn ([Ni(NH3)62+] / [Ni2+]*[NH3]^6 )= 84417 J/mol =84,42 KJ/mol

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