A student generates H2(g) over water using the reaction between zinc and hydrochloric acid

Zn(s)+ 2HCl(aq)---> ZnCl2(aq)+ H2(g)

Data:
Mass of vial and zinc 15.5082
mass of vial 15.3972
mass of zinc 0.111
final burette reading 45.30mL
barometric pressure: Patm 100.6kPa
temperature of trapped gas 24.3C
vapour pressure of water at 24.3 C: PH2O 3.004kPa
diff in solution lvls inside and outside burette 162mm H2O

calculate the equivalent pressure of the column of water representing the difference between the solution levels inside and outside the burette (P level difference) after the reaction was complete ( in units of kPa).

Can someone please show me how to do questions like this?

The pressure difference is given by

delta P = density*g*height
g is the acceleration due to gravity (9.81 meters/s/s), density in g/cc, h is height in meters. This gives delta P in kPa. I calculate 1.587 kPa for the 162 mm but that is more significant figures than we are allowed.

To calculate the equivalent pressure of the column of water representing the difference between the solution levels inside and outside the burette (P level difference), we need to use the hydrostatic pressure equation.

The hydrostatic pressure equation states that the pressure difference between two points at different heights in a fluid column is equal to the density of the fluid multiplied by the acceleration due to gravity and the difference in heights.

In this case, we are dealing with water, which has a known density of 1000 kg/m^3, and the difference in heights is given as 162 mm H2O.

To convert the height difference from mm H2O to meters, we need to divide it by 1000: 162 mm H2O / 1000 = 0.162 m.

Now, we can calculate the pressure difference using the hydrostatic pressure equation:

P level difference = density of water × acceleration due to gravity × height difference

The density of water is 1000 kg/m^3, and the acceleration due to gravity is approximately 9.8 m/s^2. Substituting these values into the equation:

P level difference = (1000 kg/m^3) × (9.8 m/s^2) × (0.162 m)

Now, we can calculate the value:

P level difference = 160.236 kPa

Therefore, the equivalent pressure of the column of water representing the difference between the solution levels inside and outside the burette (P level difference) after the reaction was complete is approximately 160.236 kPa.