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Let $X$ be a completely regular space. We denote by $C\left(X,A\right)$ the locally convex algebra of all continuous functions on $X$ valued in a locally convex algebra $A$ with a unit $e.$ Let $C_b\left(X,A\right)$ be its subalgebra consisting of all bounded continuous functions and endowed with the topology given by the uniform seminorms of $A$ on $X.$ It is clear that $A$ can be seen as the subalgebra of the constant functions of $C_b\left(X,A\right)$. We prove that if $A$ is a Q-algebra, that is, if the set $G\left(A\right)$ of the invertible elements of $A$ is open, or a Q-álgebra with...