The displacement method for measuring volume:
( it has more that one answer fyi)

a- is not always accurate
b- can only be used to measure the volume of solids
c- may yield incorrect results if the matter is soluble in liquid
d- is the most precise way to measure the volume of a gas

Explanation:

It is known that to measure the volume of regular or irregular solids we can put the solid into a liquid. And then, the volume of liquid displaced will be equal to the volume of irregular solid.

Also, we can measure the volume of a gas with the help of displacement.

For example, in a syringe the volume of gas displaced will be equal to the volume occupied by the fluid.

If a matter is soluble in liquid, then we cannot measure its correct volume.

Therefore, we can conclude that the displacement method for measuring volume:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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