Question

A chemist wishes to determine the rate of reaction of zinc with hydrochloric acid.
The equation for the reaction is:
Zn(s) + 2HCl(aq) -> H2(g) + ZnCl2(aq)
A piece of zinc is dropped into 1.00 L of 0.100 M HCl and the following data were obtained:
Time Mass of Zinc
0 s 0.016 g
4 s 0.014 g
8 s 0.012 g
12 s 0.010 g
16 s 0.008 g
20 s 0.006 g
a) Calculate the Rate of Reaction in grams of Zn consumed per second. Answer___________________
b) Calculate the Rate of Reaction in moles of Zn consumed per second. Answer___________________

Answer 1

Figured out 3A.

(.006g-.016g)/20

Answer 2

turn those masses of Zn into moles of Zn and recalculate