Question

Under conditions of ______________ heating, decomposition usually take place in thermogravimetry. Fill up the suitable option from the choices given below.

(a) First order

(b) Second order

(c) Third order

(d) Dynamic

This question was addressed to me in an international level competition.

My doubt is from Thermogravimetric Analysis in division Thermal Analysis of Solid State Chemistry

Answer 1

The correct option is (d) Dynamic

The explanation is: In thermogravimetric analysis (TGA), decomposition usually take place under dynamic heating conditions over a range of temperature Ti to Tf  and a second constant weight plateau is then observed above Tf, which corresponds to the weight of the residue Wf.