Question

Which one is the base: $CsOH$ or $HBr$ ?

• A. $CsOH$
• B. $HBr$
• C. Both $A$ and $B$
• D. None of the above

Answer 1

The correct option is A $CsOH$

$CsOH$ is a base and $HBr$ is an acid.
$Cs$ is more electropositive than $O.$ Hence, $Cs-OH$ bond breaks to form $C{s}^{+}$ ion and $O{H}^{-}$ ion. Hence, it acts as a base. While $HBr$ forms $H^{+}$ and $B{r}^{-}$, hence it is an acid.