Figure 3. The apparatus was used to prepare and collect chlorine gas

From

Designing Experimental Exercises Used for Teaching Chemistry in High School

C.C. Giac, L.H. Hoang, N.T.P. Lien, P.H. Thanh

World Journal of Chemical Education. 2017, 5(5), 168-174 doi:10.12691/wjce-5-5-5