Determining the Rate of Reaction
at time, t, using a graph
The
rate of a chemical reaction at time, t (in this case, t = 30s)
can be obtained by determining the tangent of the curve at the
time t. Note that the tangent line cuts / touches the curve at
only one point. The gradient (or tangent) is calculated as the
change in y divided by the change in x.
In the example shown in the graph above, the rate of reaction at time, t = 30s, is
40.0 - 10.5 cm3 = 0.369 cm3 /s
80 - 0 s
Click / Touch here or on the graph to see the rate of reaction at t = 100s
Click / Touch on the following to read about
o the rate of reaction
o the physical changes used to investigate the rate of reaction
o the factors that affect the rate of reaction
o the collision theory to explain the rate of reaction
o the applications of the rate of reaction
In the example shown in the graph above, the rate of reaction at time, t = 30s, is
40.0 - 10.5 cm3 = 0.369 cm3 /s
80 - 0 s
Click / Touch here or on the graph to see the rate of reaction at t = 100s
Click / Touch on the following to read about
o the rate of reaction
o the physical changes used to investigate the rate of reaction
o the factors that affect the rate of reaction
o the collision theory to explain the rate of reaction
o the applications of the rate of reaction
Kadar tindak balas kimia
pada masa t boleh ditentukan menggunakan tangen pada masa t. Garis
tangen hanya merentas graf (garis lengkung) pada satu titik
sahaja. Kecerunan (tangen) dikirakan dengan membahagikan perubahan
y dengan perubahan x.
Dalam contoh graph di atas, kadar tindak balas pada masa t = 30s ialah
40.0 - 10.5 cm3 = 0.369 cm3 /s
80 - 0 s
Klik / Sentuh di sini atau graf di atas untuk melihat kadar tindak balas pada t = 100s
Klik / Sentuh yang berikut untuk
o kadar tindak balas
o perubahan-perubahan fizikal yang boleh digunakan untuk mengkaji kadar tindak balas
o faktor-faktor yang mempengaruhi kadar tindak balas
o teori perlanggaran untuk menjelaskan kadar tindak balas
o aplikasi / penggunaan tindak balas