Question

Question #c87b5

Answer 1

In some cases.

More often, when a strong acid results with a strong base, they effectively "neutralize" each other,

`HCl(aq) + NaOH(aq) to NaCl(aq) + H_2O(l)`

A scenario where your statement may be correct is using a hydrated strong base salt (e.g. `Sr(OH)_2*8H_2O`) and dissolving it in a strong acid.

Answer 2

Yes, this is one of the general types of a double displacement reactions.

Explanation:

A double displacement reaction where;

1. A salt with an acid that forms a salt of the acid and a second acid that is volatile; i.e.,
   `2KNO_3(aq)+H_2SO_4(aq)->K_2SO_4(aq)+color(red)(2HNO_3(g)`(balanced)
   Note:
   `color(red)(HNO_3) " is one of the a highly volatile acids"`
2. Same reaction of a salt with an acid that may yield a compound that can be decomposed into a `color(red)("gas")` and a `color(blue)("liquid")`; that is,
   `CaCO_3(aq)+2HCl(aq)->CaCl_2(aq)+color(orange)(H_2CO_3)(aq)`(balanced)
   where:
   `color(orange)(H_2CO_3)(aq)->color(red)(CO_2(g))+color(blue)(H_2O(l))`