RUN #2 RUN #1 1. Mass of Magnesium 0.6 O. OS 2. Volume of Hydrogen Gas Collected
ID: 1066262 • Letter: R
Question
RUN #2 RUN #1 1. Mass of Magnesium 0.6 O. OS 2. Volume of Hydrogen Gas Collected SIMC 3. Temperature (°C) la ab 4. Temperature (K) (Show Calculation) 5. Barometric (Room) Pressure 6. Height Difference Between Water Levels1 014 mm 2tn 184 ymn 36.6mm 7. Mercury Equivalent of Height Difference 136 (Show Calculation) 8am 16 nm 8. Vapor Pressure of Water (See Chart) 9. Pressure of Dry Hydrogen Gas (Show Calculation) 10. Number of Moles of Hydrogen Gas (H2) Collected o ubamb, oust mds (Show Calculation) 11. Number of Grams of Hydrogen Gas Collected O goal (Show Calculation) 12. Experimental Value for Equivalent Weight of Magnesium Show Calculation) 13. Theoretical Value for Equivalent Weight of Magnesium (Show Calculation) 14, Percent ErrorExplanation / Answer
In this experiment equivalent weight of Mg is to be found.
The basic reaction governing the calculations is ;
Mg(s) + HCl ---> MgCl2(aq) + H2(g)
In this table you have provided the data for the calculations. The pressure of dry H2 gas is calculated by subtracting the vapor pressure of water from the barometric pressure reading.
In the end you have calculated the expermiental value for equivalent weight and compared it with the theoretical weight.
A possible conclusion for this lab could be the reasons causing the error, that is, the differences in the observed and theoretical values.
% error = (observed value - theoretical value) / theoretical value * 100
Following can be the possible reasons :
Some air bubbles might have been introduced while inverting the apparatus uf you are using eudiometer.
Incorrect measurement of mass of Mg can also lead to devaition in the answer.
Hope this helps, let me know if you need any other info because all the data has already been calculated by you and I could only think of this as the conclusion.
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