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PolarNik [594]
3 years ago
12

) Each of the following is a noncovalent interaction EXCEPT: A) a hydrogen bond. B) a carbon-hydrogen bond. C) the interaction b

etween an amino and a carboxylate group. D) a van der Waals interaction. E) an interaction between —NH3+ and a water molecule.
Chemistry
1 answer:
Alecsey [184]3 years ago
5 0

Each of the following is a noncovalent interaction except a carbon-hydrogen bond. The correct option is B.

Explanation:

Non covalent interaction: is the sharing of electron as weak bonds between hydrogen and other atom. Non covalent interaction have large roles in the maintenance of structures of biomolecules as proteins. In biological processes many times a transient bonds are formed between molecules for various functions. The interaction between atoms of the same molecule termed as intermolecular bonds are also non-covalent interactions.

Non- covalent bonds are present in the helix formation.

The non covalent interactions are hydrogen bonds, Van Der Waals forces dipole -dipole bonds and hydrobhic interactions.

The bonds formed in C-H is non-polar and thus are not involved in hydrogen bond hence non covalent interaction.

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The 2s orbital is at a higher energy level.

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If 2.0 g of copper(II) chloride react with excess sodium nitrate, what mass of sodium chloride is formed in this double replacem
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Taking into account the reaction stoichiometry, 1.729 grams of NaCl is formed.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

CuCl₂ + 2 NaNO₃ → Cu(NO₃)₂ + 2 NaCl

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • CuCl₂: 1 mole
  • NaNO₃: 2 moles
  • Cu(NO₃)₂ : 1 mole
  • NaCl: 2 moles

The molar mass of the compounds is:

  • CuCl₂: 134.44 g/mole
  • NaNO₃: 85 g/mole
  • Cu(NO₃)₂ : 187.54 g/mole
  • NaCl: 58.45 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

  • CuCl₂: 1 mole ×134.44 g/mole= 134.44 grams
  • NaNO₃: 2 moles ×85 g/mole= 170 grams
  • Cu(NO₃)₂ : 1 mole ×187.54 g/mole= 187.54 grams
  • NaCl: 2 moles ×58.45 g/mole= 116.9 grams

<h3>Mass of NaCl formed</h3>

The following rule of three can be applied: If by stoichiometry of the reaction 134.44 grams of CuCl₂ form 116.9 grams of NaCl, 2 grams of CuCl₂ form how much mass of NaCl?

mass of NaCl=\frac{2 grams of CuCl_{2}x116.9 grams of NaCl }{134.44grams of CuCl_{2}}

<u><em>mass of NaCl= 1.739 grams</em></u>

Finally, 1.729 grams of NaCl is formed.

Learn more about the reaction stoichiometry:

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