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what is the maximum mass of magneium metal should be used in its reaction with hcl so that the total pressure does not exceed 1.5 atm

Sagot :

The maximum mass of magnesium used in its reaction with HCl is 0.08gm so the total pressure does not exceed 1.5 atm.

We will use ideal gas laws to solve this

For the final pressure, P = 1.5 atm

Change in pressure = 1.5-1

= 0.5 atm

Volume = 0.161L

T= 298K

What are ideal gas laws?

The equation of state for a synthetic perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has significant drawbacks, it is a decent approximation of the behavior of many gases under various conditions.

Only an ideal gas or a real gas that behaves enough like an ideal gas can be approximated by the equation of state presented here (PV = nRT). The equation of state can be expressed in a wide variety of ways.

Calculation:

Let the moles of H, produced then

Using ideal gas law

P×V= n×R×T

0.5 × 0.161 = n × 0.0821 × 298

n=0.00329

Mg+ 2HCl⇒ Mg.Cl2 + H₂

Moles of H, 0.00329 1 mole of Mg gives 1 mole of H

Therefore, number of moles of Mg-0.0329

Mass of Mg=0.00329 × 24.3

Mass of Mg=0.08 gm

The maximum mass of magnesium used in its reaction with HCl is 0.08gm so the total pressure does not exceed 1.5 atm.

To refer more about ideal gases, visit:

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