Estimating Initial Rate Of Reactiom

Question 1

What is the initial rate of reaction ?

Answer 1

Is the rate of reaction right at start of reaction , close to time equals zero (t=0£ on graph

Question 2

What can you use to estimate initial rate of reaction

Answer 2

Tangent

Question 3

To work out initial rate of reaction, carry out following steps?

Answer 3

1. Draw a tangent to curve time = 0 using a ruler. Do this by positioning ruler so it’s an equal distance from the curve at both sides of where it’s touching. Estimate where the curve would confine if it’s carried on below 0.
2. Calculate gradient of tangent
3. Work out units of the rate. Units will vary depending on what’s was measured in equipment.
   To work out units of rate from a graph divide units of y axis by units of x axis.

Question 4

Equation for gradient

Answer 4

Gradient = change in y axis divided by change in x axis

Question 5

What is the variable on x axis?

Answer 5

Time