(a) Consider the hypothetical element X. XO reacts with hydrogen gas to form XH;OH. Calculate the enthalpy of this reaction given that: (1) the enthalpy change that occurs when X reacts with oxygen gas to form XO is -221.0 kJ (ii) the enthalpy change that occurs when X reacts with oxygen gas and hydrogen gas to form XH;OH is -402.4 kJ.
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
![(a)
Consider the hypothetical element X.
XO reacts with hydrogen gas to form XH;OH. Calculate the enthalpy of this reaction given that:
(i) the enthalpy change that occurs when X reacts with oxygen gas to form XO is -221.0 kJ
(ii) the enthalpy change that occurs when X reacts with oxygen gas and hydrogen gas to form
XH,OH is -402.4 kJ.
Calculate the distance between the centers of Y²* and Z² ions in a YZ lattice given that when
3.6 g of the compound are formed from its gaseous ions, 3.8 kJ of energy are released. The
proportionality constant, k = 8.01 x 101" J pm. Molar mass of YZ: 257 g moľ'
(b)
(c)
When a sample of vanadium metal absorbs 353 kJ of energy, the 'd' electrons of the metal atoms
undergo a transition from their ground state to the fifth electron shell. Calculate the mass of this
metal sample.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4621a5e7-3aae-4f76-9bd2-9991efb5f284%2F80ffc7cb-59b2-4d32-8c5a-d46fe06f8db5%2F1h6mjr_processed.jpeg&w=3840&q=75)
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