Using the diagram above, calculate the relative density of x, if the density of methanol is 800kgm\(^{-3}\)
0.8
0.5
1.5
2.5
Explanation
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Discussions (14)
Definition of Relative Density: By scientific standard, Relative Density (RD) is the ratio of a substance's density to the density of water (
), not to another liquid like methanol.
The Correct Calculation:
Using
, the density of Liquid X is
.
Therefore, the actual Relative Density is 0.4
Relative density is always ratio of density of any other liquid to density of water. From the calculation density of liquid x is 0.4g/cm cubed.
ex/ew= 0.4/1
= 0.4
why density of liquid over methanol
Relative density should be density of substance over density of Water
The trick here is that the methanol is acting as the density of water. That is how it is stated in the formula
