Question

The reaction is an example of?
\[F{{e}_{2}}{{O}_{3}}+2Al\to A{{l}_{2}}{{O}_{3}}+2Fe\]
a.) Combination
b.) Decomposition
c.) Displacement reaction
d.) Double decomposition

Answer 1

Hint: The above response is known as displacement response iron oxide responds with aluminum to frame aluminum oxide and iron metal.

Complete step-by-step answer:
A displacement response happens when a more receptive animal variety responds with a less receptive animal category, and takes the electrons, framing another ionic bond and another species. For the most part these responses happen because of redox responses.
The more receptive species is that way since it is better at picking up electrons. In redox terms, let’s take a gander at a displacement response:
\[C{{l}_{2}}\text{ }+2NaBr\to 2NaCl+B{{r}_{2}}\]
In this response, the chlorine dislodges the bromine in the sodium bromide, shaping NaCl. This response happens because of bromide being a superior electron donator than chloride (recall, is ionic, in arrangement it's \[N{{a}^{+}}\] and \[B{{r}^{-}}\]) This implies chlorine can take the electron off the bromide particles, by evacuating the sodium, the condition is:
\[C{{l}_{2}}\text{ }+\text{ }2B{{r}^{-}}\to \text{ }2C{{l}^{-}}+\text{ }B{{r}_{2}}\]
As should be obvious, the chlorine takes the bromides electrons, shaping \[C{{l}^{-}}\]. This is the situation with most displacement responses.
The correct answer C.

Note: There are two kinds of displacement responses.
Single Displacement Reaction:
In this response a more receptive metal component can uproot the particles of a less receptive metal from a compound (additionally can happen with more responsive non-metal component dislodging a less responsive non-metal from a compound). These responses are regularly communicated as the accompanying general condition:
\[A\text{ }+\text{ }BC\text{ }-\text{ }>\text{ }B\text{ }+\text{ }AC\] where A will be an unadulterated metal that is more receptive than the metal B.
We typically observe these responses happening with the ionic compound in watery arrangements. Metals don't disintegrate in water, so stay strong.
Double Displacement Reaction:
In this response, reactivity of components doesn't assume any job in whether a response will happen. In these responses, an insoluble compound is delivered after joining two dissolvable mixes. These responses are frequently communicated as the accompanying general condition:
\[AB\text{ }+\text{ }CD\text{ }-\text{ }>\text{ }AD\text{ }+\text{ }CB~\] where one of the two items is an insoluble compound.