Question

Consider the following reaction:
${\mathrm{HNO}}_3\left(\mathrm{aq}\right)+\mathrm{NaOH}\left(\mathrm{aq}\right)\to {\mathrm{NaNO}}_3\left(\mathrm{aq}\right)+H_{2}O\left(l\right)$
The given reaction is an example of a
i. decomposition reaction
ii. combination reaction
iii. double displacement reaction
iv. neutralisation reaction

[0.8 marks]

• A. (ii) and (iii)
• B. (i) and (iv)
• C. (i) and (iii)
• D. (iii) and (iv)

Answer 1

The correct option is D (iii) and (iv)

In the given reaction, an acid, $HN{O}_3$, reacts with a base, $NaOH,$ to form a salt, $NaN{O}_3$, and water, $H_{2}O$. This is an example of a neutralisation reaction.
Also, the given reaction involves an exchange of ions between the reactants. In other words, it is also an example of a double displacement reaction.