Question

Identify whether the following changes would increase or decrease the rate constant. (1 point)

Increasing Ea (0.5 point):


Increasing T (0.5 point):

Answer 1

Answer:

Increase

Increase

Explanation:

Answer 2

By increasing the activation energy (Ea) the rate constant decreases and by increasing the temperature (T) the rate constant increases.

What is Rate Constant ?

The rate constant is also known as specific rate constant is a proportionality factor between rate of reaction and concentration.

Arrhenius Equation

$k = Ae^{-\frac{Ea}{RT}}$

Where,

k = Chemical reaction rate

A = Pre-exponential Factor

Ea = Activation energy

R = Gas constant

T = Temperature

Now, check whether the following change increases or decreases the rate constant.

Increasing Ea

According to the Arrhenius Equation the higher the activation energy, the slower the reaction. Rate constant increases exponentially with decreasing Ea and increasing T.  So by increasing activation energy (Ea) decreases the rate.

Increasing T

The rate constant increases with increase in temperature. increasing the T of a reaction increases the rate because the rate constant increases a/q to the Arrhenius Equation. So by increasing the temperature increases the rate.

Thus, we can conclude that by increasing the activation energy (Ea) the rate constant decreases and by increasing the temperature (T) the rate constant increases.

Learn more about the rate constant here: https://brainly.com/question/24749252

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