Question

(THIS QUESTION IS FROM APEX ON COURSE: Physical Science Sem 2)

Which one of the following is an example of a composition reaction?

A. 2Na (s) + CI2 (g) → 2NaCI (s)

B. Zn (s) + 2HCI (aq) → ZNCI2 (aq + Hz (g)

C. Cu (s) + 2AgNO3 (aq) → Cu(NO3)2(aq) + 2Ag (s)

D. CaCO3 (s) → CaO (s) + O2 (g)

Answer 1

A. 2Na (s) + CI2 (g) → 2NaCI (s)

Step-by-step explanation:

Answer 2

A. 2Na (s) + CI2 (g) → 2NaCI (s)