a. A group 1 metal only forms one oxide (MO) with oxygen. The oxide that is formed will not produce hydrogen peroxide when it reacts with water. What is the identity of the group 1 metal? b. The NUMBER of electrons present in the terminal bonds in diborane is? (type the number only) c. Using a single sentence, account for the following observation: aqueous solutions of BeCI, are acidic.
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
![Enthalpy of hydration of Be2 (HEB) = -2484 kJmol1
Enthalpy of hydration of Sr2* (HESR) = -1446 kJmol1
Enthalpy of hydration of SO4²- (HESO) = -1004 kJmol1
%3D
Using ONLY the abbreviations provided in the brackets in the table, derive a formula that you would use to calculate the enthalpy of solution for
Beso, and SRSO (in a format similar to A+B+C)
d. Formula for the enthalpy of solution for BeSO, (do not write the equal sign)
e. Formula for the enthalpy of solution for SrSO, (do not write the equal sign)
f. From the formula you have derived, calculate the enthalpy of solution for BeSO, and select the option that best matches your answer.
g. Calculate the enthalpy of solution of solution for SrSO, and select the option that best matches your answer.
i. What accounts for the difference in the solubility of Beso, and Srso, in water?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F240fe136-7e87-43c1-a448-d026d68068c2%2F2f6d0492-aeff-479f-a758-f1be856d6470%2Fng4wtn9_processed.jpeg&w=3840&q=75)
![a. A group 1 metal only forms one oxide (MO) with oxygen. The oxide that is formed will not produce hydrogen peroxide when it reacts with water. What is the identity
of the group 1 metal?
b. The NUMBER of electrons present in the terminal bonds in diborane is? (type the number only)
c. Using a single sentence, account for the following observation: aqueous solutions of BeCI, are acidic.
The data in the table below provides the lattice enthalpies for Beso, and SrSo, and the hydration enthalpies for their associated ions.
Enthalpy of lattice formation of BeSO4 (ELF1) = -2850 kJmol1
%3D
Enthalpy of lattice formation of SRSO4 (ELF2) = -2577 kJmol-1
Enthalpy of hydration of Be2 (HEB) = -2484 kJmol1
Enthalpy of hydration of Sr²* (HESR) = -1446 kJmol1
Enthalpy of hydration of SO42- (HESO) = -1004 kJmol1
Using ONLY the abbreviations provided in the brackets in the table, derive a formula that you would use to calculate the enthalpy of solution for
BesO, and Srso. (in a format similar to A+B+C)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F240fe136-7e87-43c1-a448-d026d68068c2%2F2f6d0492-aeff-479f-a758-f1be856d6470%2Fw4xz0cr_processed.jpeg&w=3840&q=75)
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