Which of the following situations is most favorable for solubility? View Available Hint(s) Which of the following situations is
2 answers:
Answer: Option (a) is the correct answer.
Explanation:
It is known that more is the attraction between molecules of a solute with the solvent molecules then more attraction takes place. Due to this more number of solute particles will dissolve in the solvent.
For example, NaCl is an ionic compound and water is a polar solvent. So, when we dissolve NaCl (solute) in water (solvent) then sodium chloride will completely dissolve in water because like dissolves like.
This also means that due to the strong attraction between NaCl molecules and water molecules the salt dissociates into and
ions.
Thus, we can conclude that out of the given options strong attraction between solute particles situation is most favorable for solubility.
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Answer:
7.5 g
Explanation:
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<em>Ammonium phosphate ((NH₄)₃PO₄) is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H₃PO₄) with ammonia (NH₃). What mass of ammonium phosphate is produced by the reaction of 4.9 g of phosphoric acid? Be sure your answer has the correct number of significant digits.</em>
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Step 1: Write the balanced equation
H₃PO₄ + 3 NH₃ ⇒ (NH₄)₃PO₄
Step 2: Calculate the moles corresponding to 4.9 g of phosphoric acid
The molar mass of phosphoric acid is 98.00 g/mol.
Step 3: Calculate the moles of ammonium phosphate produced from 0.050 moles of phosphoric acid
The molar ratio of H₃PO₄ to (NH₄)₃PO₄ is 1:1. The moles of (NH₄)₃PO₄ produced are 1/1 × 0.050 mol = 0.050 mol.
Step 4: Calculate the mass corresponding to 0.050 moles of ammonium phosphate
The molar mass of ammonium phosphate is 149.09 g/mol.