A chemistry student is setting up a single-replacement reaction between 5 grams of solid zinc metal and
aqueous hydrochloric acid, as shown in the equation
below:
Zn (0) + 2 HCl(aq) >ZnCl2 (aq)
>ZnCl2 (aq) + H2(g)
She needs to finish the experiment before the end of
lunch, so she wants the reaction to go as quickly as
possible. She has several types of zinc in the stock
room. Which type should she use?
o one solid 5 g cube of zinc
o It doesn't matter; they will all react at the same rate.
o 5g of small chunks of zinc
O5g of fine zinc powder