Question

When 5ml of HCl was added

to the flask, 5 ml of air was
removed. This was done so
that____.

A. there was still 140 ml of volume available for the
reaction

B. there was less than atmospheric pressure inside
the flask

C. there was more than atmospheric pressure inside
the flask to drive the reaction

Answer 1

A. There was still 140 ml of volume available for the reaction

Step-by-step explanation:

According to Avogadro's law, we have that equal volumes of all gases contains equal number of molecules

According to the ideal gas law, we have;

The pressure exerted by a gas, P = n·R·T/V

Where;

n = The number of moles

T = The temperature of the gas

R = The universal gas constant

V = The volume of the gas

Therefore, given that the volumes and number of moles of the removed air and added HCl are the same, the pressure and therefore, the volume available for the reaction will remain the same

There will still be the same volume available for the reaction.