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Nitrogen triodide is a very dangerous substance because it decomposes explosively and unpredictably, and with great force. The relative instability of NI3 is related to the much greater stability of the products of the decomposition. The unbalanced equation is Ni3 = N2+I2. Calculate the mass of iodine produced when 1.75 g of NI3 is completely decomposed.



Answer :

Answer:

1.688g of I2

Explanation:

So first step before everything is to balance the equation

NI3 -> N2 + I2

Product:

N 2

I 2x3 = 6

Reactant:

N 1 x2 = 2

I 3 -> 6

2NI3 -> N2 + 3I2

So the question on whether it is decomposing or not doesn't matter. its more like if we initially have 1.75g of NI3, how much I2 made.

It can be calculated by simple stoichiometry

1.75g NI3 x (1mol NI3/394.719 g/mol NI3) x (3 mol I2/2 mol NI3) x (253.8089 g I2/mol I2)

1.688g of I2

Hope that answers your question

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