The distinction between homogeneous and heterogeneous chemical reactions is crucial because
many chemically reactive systems, such as hydrometallurgical processes, cooling towers, biological
systems,
fog
dispersion,
catalysis,
etc.,
involve
both
types
of
reactions.
Thus,
this
study

analyzes
the
heat
transmission
(HT)
characteristics
in
an
MHD
stagnant
flow
of
power-law
fluid

caused
by
a
spinning
disk
that
is
stretched
and
saturated
in
a
porous
medium.
The
study
considers

homogeneous-heterogeneous
(HH)
reactions
and
nonlinear
thermal
radiation
subject
to
no-slip

and

convection boundary conditions. The leading equations are switched into ordinary differential
equations
(ODEs)
employing
similarity
variables.
The
study
focuses
on
the
dimensionless

concentration,

velocity, temperature, Nusselt number, and skin friction coefficient, which are
discussed in detail in the results and discussion section. The study observes that for power-law
fluids with an index value less than 1, the skin friction coefficient decays as the power-law
index grows. It also notes that the dimensionless skin friction of power-law fluids decreases as
the velocity ratio increases. The dimensionless concentration increases with Schmidt and modified
Prandtl
numbers
for
both
power-law
fluids
over
a
stretching
spinning
porous
disk.
The
HH

reaction
parameters
decline
the
concentration
of
power-law
fluids.