Illustrated Guide to Home Chemistry Experiments

Chapter 12 Laboratory: Chemical Kinetics 221

TABLE 12-3: Effect of concentration on reaction rate—observed and calculated data

Item Trial A (4 M HCl)Trial B (2 M HCl)Trial C (1 M HCl)

A. Mass of tablet ________.___ g________.___ g________.___ g

B. Mass of cup + hydrochloric acid________.___ g________.___ g________.___ g

C. Temperature of hydrochloric acid________.__ °C________.__ °C________.__ °C

D. Mass at 0:00 (A + B) ________.___ g________.___ g________.___ g

E. Mass at 0:05 ________.___ g________.___ g________.___ g

F. Mass at 0:10 ________.___ g________.___ g________.___ g

G. Mass at 0:15 ________.___ g________.___ g________.___ g

H. Mass at 0:20 ________.___ g________.___ g________.___ g

I. Mass at 0:25 ________.___ g________.___ g________.___ g

J. Mass at 0:30 ________.___ g________.___ g________.___ g

K. Mass at 0:35 ________.___ g________.___ g________.___ g

L. Mass at 0:40 ________.___ g________.___ g________.___ g

M. Mass at 0:45 ________.___ g________.___ g________.___ g

n. Mass at 0:50 ________.___ g________.___ g________.___ g

O. Mass at 0:55 ________.___ g________.___ g________.___ g

P. Mass at 1:00 ________.___ g________.___ g________.___ g

Q. Mass at completion of reaction________.___ g________.___ g________.___ g

R. Mass loss (D – Q) ________.___ g________.___ g________.___ g

S. Mass loss percentage [(R/A)·100]________.___ %________.___ %________.___ %