Which of the following can be the substance that zinc was dropped into?
A piece of zinc (Zn) - a reactive metal - was dropped into a test tube containing a substance. A zinc salt was formed and hydrogen gas was liberated. This is shown in the equation below.
Zn + _____ ----------> zinc salt + H2 gas
Which of the following can be the substance that zinc was dropped into?
P) water
Q) hydrochloric acid
R) a solution of a zinc salt
A. only P
B. only Q
C. only R
D. either P or R
4 views