Question 1

The compound P4O10 is used in refining sugar.Select the classification for the reaction in which it is synthesized.
P4(s) + 5O2(g)   →	o→  P4O10(s)

Accepted Answer

A)  combination
B)  decomposition
C)  displacement
D)  acid-base
E)  precipitation F) B) and D)
G) All of the above

Question 2

Sodium tripolyphosphate is used in detergents to make them effective in hard water.Calculate the oxidation number of phosphorus in Na5P3O10.

Accepted Answer

A)  +3
B)  +5
C)  +10
D)  +15
E)  None of these is the correct oxidation number.F) B) and E)
G) A) and B)

Question 3

Potassium chloride,KCl,sodium sulfate,Na2SO4,glucose,C6H12O6,carbon dioxide,CO2 and ammonium phosphate, (NH4) 3PO4,are soluble in water.Which one produces the largest number of dissolved particles per mole of dissolved solute?

Accepted Answer

A)  KCl
B)  Na2SO4
C)  C6H12O6
D)  CO2
E)  (NH4) 3PO4F) A) and B)
G) B) and C)

Question 4

Which one of the following substances,when dissolved in water at equal molar concentrations,will give the solution with the lowest electrical conductivity?

Accepted Answer

A)  CaCl2
B)  HNO3
C)  NH3
D)  C6H12O6 (glucose) 
E)  CO2F) D) and E)
G) A) and B)

Exam 4: Three Major Classes of Chemical Reactions

The compound P₄O₁₀ is used in refining sugar.Select the classification for the reaction in which it is synthesized. P₄(s) + 5O₂(g) $\to$ P₄O₁₀(s)

Correct Answer
verified

Sodium tripolyphosphate is used in detergents to make them effective in hard water.Calculate the oxidation number of phosphorus in Na₅P₃O₁₀.

Correct Answer
verified

Which one of the following substances,when dissolved in water at equal molar concentrations,will give the solution with the lowest electrical conductivity?

Correct Answer
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Potassium chloride,KCl,sodium sulfate,Na₂SO₄,glucose,C₆H₁₂O₆,carbon dioxide,CO₂ and ammonium phosphate, (NH₄) ₃PO₄,are soluble in water.Which one produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
verified

Exam 4: Three Major Classes of Chemical Reactions

The compound P4O10 is used in refining sugar.Select the classification for the reaction in which it is synthesized. P4(s) + 5O2(g) →\to→ P4O10(s)

Correct AnswerverifiedShow Answer

Sodium tripolyphosphate is used in detergents to make them effective in hard water.Calculate the oxidation number of phosphorus in Na5P3O10.

Correct AnswerverifiedShow Answer

Which one of the following substances,when dissolved in water at equal molar concentrations,will give the solution with the lowest electrical conductivity?

Correct AnswerverifiedShow Answer

Potassium chloride,KCl,sodium sulfate,Na2SO4,glucose,C6H12O6,carbon dioxide,CO2 and ammonium phosphate, (NH4) 3PO4,are soluble in water.Which one produces the largest number of dissolved particles per mole of dissolved solute?

Correct AnswerverifiedShow Answer

The compound P₄O₁₀ is used in refining sugar.Select the classification for the reaction in which it is synthesized. P₄(s) + 5O₂(g) $\to$ P₄O₁₀(s)

Correct Answer
verified

Sodium tripolyphosphate is used in detergents to make them effective in hard water.Calculate the oxidation number of phosphorus in Na₅P₃O₁₀.

Correct Answer
verified

Correct Answer
verified

Potassium chloride,KCl,sodium sulfate,Na₂SO₄,glucose,C₆H₁₂O₆,carbon dioxide,CO₂ and ammonium phosphate, (NH₄) ₃PO₄,are soluble in water.Which one produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
verified