Question

Bobby was given four different hydrochloric acid solutions, each of which had a different molarity. He was curious to see what would happen if he put a 5-gram piece of zinc metal into 50 ml of each HCl solution. In which HCl solution would the zinc metal have the quickest rate of reaction?

a) 0.5M HCL

b) 1.0M HCL

c) 1.5M HCL

d) 2.0M HCL

Answer 1

The zinc metal will have the quickest rate of reaction when placed in the 2.0M HCl solution.

Step-by-step explanation:

The rate of reaction between zinc metal and hydrochloric acid depends on the concentration of the acid. To determine which HCl solution will have the quickest rate of reaction, we need to consider the molarity of each solution. The molarity represents the concentration of the acid, which is determined by the number of moles of solute (hydrochloric acid) in a liter of solution.

The higher the molarity, the more concentrated the acid and the faster the rate of reaction. In this case, the solution with the highest molarity is 2.0M HCl. Therefore, the zinc metal will have the quickest rate of reaction when placed in the 2.0M HCl solution.