5. 下列装置或试剂能达到实验目的的是
<table><tr><td rowspan=1 colspan=1><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/dd207ff0-7795-4ca7-aa85-7590bef14acb/934d0f69d4d93189.jpg"/></td><td rowspan=1 colspan=1><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/dd207ff0-7795-4ca7-aa85-7590bef14acb/e7c2e66a8a9b96f0.jpg"/></td></tr><tr><td rowspan=1 colspan=1>A. 蛋白质的变性</td><td rowspan=1 colspan=1>B. 中和反应反应热的测定</td></tr><tr><td rowspan=1 colspan=1> $\mathrm { F e C l } _ { 3 }$ <img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/dd207ff0-7795-4ca7-aa85-7590bef14acb/4bc2febfe233c9cf.jpg"/></td><td rowspan=1 colspan=1><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/dd207ff0-7795-4ca7-aa85-7590bef14acb/5ec66962cc260307.jpg"/></td></tr><tr><td rowspan=1 colspan=1>C. $F e ( O H ) _ { 3 }$ 胶体的制备</td><td rowspan=1 colspan=1>D. 氯气的制备</td></tr></table>
A