Write an expression for standard enthalpy of formation using suitable chemical reaction
1 answer:
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Answer:
Explanation:
From the given information, since the molecular mass of the ion M+ is not given;
Let's assume M+ = 58.0423
So, by applying the 13th rule;
we will need to divide the mass by 13, after dividing it;
The quotient n = no. of carbon; &
The addition of the quotient (n) with the remainder r = no. of hydrogen.
So;
So;
From the given information; we have oxygen present, so since the mass of oxygen = 16, we put oxygen in the molecular formula by removing . Also, since the mass is an even number then Nitrogen is 0.
So, we have:
Answer:
The mileage of the car is 51.75 mil/gal.
Explanation:
Distance covered by the car = 275 km =
1 Mile = 1.609 kilometer
Volume of gasoline used by the car = 12.5 L =
1 gallon = 3.785 Liter
Mileage of the car :
=
The mileage of the car is 51.75 mil/gal.
Answer:
Explanation:
Dipole-dipole interaction is a type of intermolecular force that exits in polar molecules. Electronegativity of atoms bonded in polar molecules are different. Because of difference in electronegativity partially charged develops which attracted towards each other through electrostatic force. This electrostatic force between partially charged ions are called dipole-dipole interactions. Dipole moment is a vector quantity.
For, example, HCl
In , electronegativities of carbon (C) and bromine (Br) are different and four dipoles exist in the molecules but the net vector sum of all the dipoles are zero. Therefore, its is a non-polar molecule.
In the molecule, , the strongest intermolecular force is hydrogen bonding.
In , same atoms are bonded, therefore, it is a non-polar molecule and hence, cannot has dipole-dipole interaction.
Therefore, among the given, the only molecule that has dipole-dipole interaction as the strongest intermolecular force is .