Science begins with an observation, true or false?
1 answer:
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Explanation
(from the question)
(from the question)
- As an the most stable allotrope under standard conditions,
By definition,
Note, that iodine on the reactant side is stated as a gas in the equation given in the question whereas under standard conditions it is expected to be under the solid state; the given in the question seemingly corresponds to the one in which the reactant iodine exists as a solid rather than as a gas. Evaluating the last expression using data from an external source
(Cox, Wagman, et al., 1984)
... yields , which deviates significantly from the experimental value of
(Chase, 1998.) It is thus assumed that the
value provided requires a reaction with
rather than
as a reactant.
Answer:
(4)KBr(aq)
Explanation:
A mixture is an impure substance made up of two or more substances that are joined together. Their composition is indefinite and not easily represented by a simple chemical formula.
KBr is a mixture because it made up of an aqueous solution of KBr. This suggests that the substance KBr is placed inside water.
Here, we have two states of matter which is the solid and the liquid coming together.
As with both mixtures, they can be separated by physical means, KBr aqueous solution can also be done this way.
This is an example of Nucleophilic Substitution Reaction. The Substrate (Methyl Bromide) is attacked by a Nucleophile (Ethoxide), the Leaving group (Bromide) leaves the substrate and ethoxide replaces it and forms a Product (Methoxy Ethane). Reaction is shown below,
