Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$L+M\rightarrow products$

$Rate=k[L]^x[M]^y$ (1)

k= rate constant

x = order with respect to L

y = order with respect to M

n =( x+y)= Total order

a) If [L] is doubled, the reaction rate will increase by a factor of 2:

$2\times Rate=k[2L]^x[M]^y$ (2)

b) If [M] is doubled, the reaction rate will increase by a factor of 4:

$4\times Rate=k[L]^x[2M]^y$ (3)

Dividing 2 by 1:

$\frac{2\times Rate}{Rate}=\frac{k[2L]^x[M]^y}{k[L]^x[M]^y}$

$2=2^x$

$x=1$

Dividing 3 by 1

$\frac{4\times Rate}{Rate}=\frac{k[L]^x[2M]^y}{k[L]^x[M]^y}$

$4=2^y$

$2^2=2^y$

$y=2$

Thus rate law is: $k[L]^1[M]^2$

4 0

4 years ago

The effective nuclear charge for an atom is less than the actual nuclear charge due to

Irina18 [472]

Answer:

A = shielding.

Explanation:

The addition of electron causes the atomic size increase from top to bottom due to increase in atomic number.

As the atomic number increased one more electron is added and because of this electron on more electronic shell is added. Thus the electron become more away from the nucleus as many of other electrons are present in the way from nucleus to the outer electrons.

The hold of nucleus becomes weaker. Although nuclear charge is also increased but at the same time other electrons shield the respective electrons. So effective nuclear charge is weaker than the actual nuclear charge.

Because of this shielding it is easy to remove the electrons or we can say ionization energy decreases.

3 0

4 years ago

HURRY GIVING BRAINLIEST......

Dmitry [639]

Answer:

I think Water because it keeps you dehydrated. You will still survive with out any food or any place to live but it's not air i know that for a fact because we need oxygen to live.

Explanation:

hope that helps:) you might can add some more words to it or change it up if you want to.

4 0

3 years ago