Explanation:
The given data is:
The mass% of a solution is 7.
Mass of solution =450g
The mass of salt required can be calculated as shown below:
Substitute the given values in this formula to get the mass of solute that is salt:
Mass of salt =31.5g
Mass of solvent that is water = 450g-31.5g=418.5g
Answer:
E. None of the above statements are true.
Explanation:
Answer:
C) NH3 > PH3 > CH4
Explanation:
The boiling point of a substance depends on the nature of intermolecular interaction between the molecules of the substance. The greater the magnitude of intermolecular interaction between the molecules of the substance, the higher the boiling point of the substance.
Both NH3 and PH3 have intermolecular hydrogen bonding between their molecules. However, since nitrogen is more electronegative than phosphorus, the magnitude of intermolecular hydrogen bonding in NH3 is greater than in PH3 hence NH3 has a higher boiling point than PH3.
CH4 molecules only have weak dispersion forces between them hence they exhibit the lowest boiling point.
B.) solvent; its temperature is raised so it can break down the solute easier
Following reaction shows the preparation of
Nitrile from
Amide. In this reaction
Thionyl Chloride (SOCl₂)is reacted with Amide, which produced nitrile along with
SO₂ and
HCl gas. The
importance of this reaction is the removal of byproducts (i.e SO₂ and HCl). As both SO₂ and HCl are
gases so no extra workup is required to remove them. The
mechanism of reaction is as follow,
