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The correct formula for dinitrogen pentoxide is A NO5 B N2O4 C N2O5 D NO6 E N2O6

The correct formula for dinitrogen pentoxide is A NO5 B N2O4 C N2O5 D NO6 E N2O6

The correct formula for dinitrogen pentoxide is:

A)  NO5    B)  N2O4    C)  N2O5    D)  NO6    E)  N2O6

 

82.              The correct formula for tetraphosphorus hexoxide is:

A)  PO6    B)  P5O6    C)  P4O7    D)  P4O6    E)  P5O7

 

83.              Which of the following formula/name combinations is incorrect?

A)HF(aq)  hydrofluoric acidD)HClO4(aq)  perchloric acid

B)HNO3(aq)  nitrous acidE)H3PO3(aq)  phosphorous acid

C)H2SO4(aq) sulfuric acid

 

84.              Which of the following formula/name combinations is incorrect?

A)HNO2(aq)  nitrous acidD)HClO2(aq)  hypochlorous acid

B)HBr(aq)  hydrobromic acidE)H3PO4(aq)  phosphoric acid

C)H2SO3(aq)  sulfurous acid

 

85.              Which of the following formula/name combinations is incorrect?

A)HI(aq)  hydroiodic acidD)H2SO3(aq)  sulfurous acid

B)H2S(aq)  hydrosulfuric acidE)H3PO3(aq)  phosphoric acid

C)HClO3(aq)  chloric acid

 

86.              Which set of ions is formed when (NH4)2SO4 dissolves in water?

A)(NH4)22+ + SO42?D)2 N3? + 8 H+ + S+6 + 4 O2?

B)2 NH3 + 2 H+ + SO42?E)2 N3??+ 8 H+ SO42?

C)2 NH4+ + SO42?

 

87.              Which set of ions is formed when Ca(NO3)2 dissolves in water?

A)Ca2+ + (NO3)22?D)Ca2+ + 2 NO3?

B)Ca + (NO3)2E)Ca2+ + 2 N3- + 6 O2?

C)Ca+ + 2 NO3?

 

88.              Which set of ions is formed when Cu2SO4 dissolves in water?

A)2 Cu2+ + SO42?D)2 Cu+ + S+6 + 4 O2?

B)Cu2+ + SO42?E)Cu22+ + 2 SO42?

C)2 Cu+ + SO42?

 

89.              Which set of formulas is correct for the compounds calcium hydrogen carbonate, magnesium chloride, and calcium sulfate, which can cause scale build-up in pipes?

A)CaHCO3, MgCl2, and Ca(SO4)2D)Ca(HCO3)2, MgCl2, and CaSO4

B)CaHCO3, MgCl, and Ca(SO4)2E)Ca(HCO3)2, MgCl2, and Ca2SO4

C)Ca(HCO3)2, MgCl, and CaSO4

 

90.              Which set of formulas is correct for the compounds ammonia, nitric acid, and nitrous acid, respectively?

A)NH3, HN, HNOD)NH3, HNO3, HNO2

B)NH4, HNO2, HNO3E)NH4, HNO3, HNO2

C)NH3, HNO2, HNO3

abhinav behal 15-Feb-2020

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