whenever a chemical is dispensed from its original container into a secondary container the secondary container must be labeled
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Answer:
<h3>Explanation:
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⇒The composition , decomposition or displacement of molecules of matter during chemical change is called chemical reaction.
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Various conditions bring about these changes. The chemical reactions are represented by chemicalequation. The compounds or elements that take part in chemical reaction are called reactant. They are written at the left side of an arrow that represent a change while the compound or elements that formed after the chemical change are called product. They are written at the right side of the arrow.
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When nitrogen reacts with hydrogen to form ammonia :
Nitrogen + Hydrogen ⇒ Ammonia
N₂ + 3H₂ ⇒ 2NH₃
<u>Presentation </u><u>of </u><u>a </u><u>chemical </u><u>reaction </u><u>in </u><u>the </u><u>form </u><u>of </u><u>equation </u><u>is </u><u>called </u><u>chemical </u><u>equation </u>. <u>Chemical equation may be word equations or formula equations.</u>
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Step 1 : Write balanced chemical equation
The balanced chemical equation for the reaction between iodine gas and chlorine gas is given below.
Step 2 : Set up ICE table
We will set up an ICE table for the above reaction
Following points are considered while drawing ICE table
- The initial concentration of product is assumed as 0
- The change in concentration (C) is assumed as x. Change (x) is negative for reactants and positive for products
- The coefficients in balanced equation are considered while writing C values
Check attached file for ICE table
Step 3 : Set up equilibrium constant equation
The equation for equilibrium constant can be written as
Step 4 : Solving for x
Keq at 298.15 K is given as 81.9
Let us plug in the equilibrium values (E) for I₂, Cl₂ and ICl from ICE table
81.9 =
81.9 =
Solving the above equation using quadratic formula we get
x = 0.488 or x = 0.254
The value 0.488 cannot be used because the change (C) cannot be greater that initial concentration of the reactants.
Therefore the change in concentration of the gases during the reaction is 0.254 M
Hence, x = 0.254 M
From the ICE table, we know that the equilibrium concentration of ICl is 2x
The concentration of ICl when the reaction reaches equilibrium is 0.508 M
