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  1. Problems
  2. /The p-Block Elements
  3. /Groups 15 and 16: Nitrogen and Oxygen Families

Groups 15 and 16: Nitrogen and Oxygen Families

Chemistry
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More in The p-Block ElementsGroups 13 and 14: Boron and Carbon FamiliesGroups 15 and 16: Nitrogen and Oxygen FamiliesGroups 17 and 18: Halogens and Noble Gases
20 problems
Exam:
Type:
1.
A piece of copper of mass 12.7 g (63.5 g/mol) is warmed with an excess of concentrated sulphuric… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
2.
A tank holds 100.0 kg of oleum that is 20.0 % free sulphur trioxide by mass, with 80.0 % sulphuric… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
3.
A converter is fed with 2 mol of sulphur dioxide for each 1 mol of oxygen… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
4.
A wet red flower is put in a jar of sulphur dioxide and loses its colour… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy
5.
A 25.0 mL sample of a solution of sulphur dioxide needs 20.0 mL of 0.0200 mol/L acidified potassium… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
6.
A works roasts 600 kg of iron pyrites ore that is 80 % FeS2 by mass… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
7.
A sample of 2.24 L of ozonised oxygen at 273 K and 1 atm is 8.0 % ozone by volume… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
8.
Potassium superoxide is used in a breathing unit for a closed room… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
9.
A student heats 30.0 g of a mixture of potassium chlorate and potassium chloride with a little… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
10.
A teacher gives a student eight oxides to sort: Na₂O, SO₂, Al₂O₃, CO, P₄O₁₀, ZnO, N₂O and MgO… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy
11.
A sample of 41.7 g of phosphorus pentachloride (208.5 g/mol) is hydrolysed completely by excess… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
12.
A sample of 6.20 g of white phosphorus (P₄, 124.0 g/mol) burns in 10.65 g of chlorine (71.0 g/mol)… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
13.
A student has three samples. The first is a white waxy solid that glows in the dark and dissolves… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy
14.
A sample of 6.54 g of zinc, with a molar mass of 65.4 g/mol, reacts completely with dilute nitric… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
15.
A student treats 19.05 g of copper, with a molar mass of 63.5 g/mol, with dilute nitric acid until… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
16.
A plant burns 8.50 t of ammonia each day in the Ostwald process… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
17.
Find the oxidation state of nitrogen in each species: N₂O, NO₂⁻, NO₃⁻, NH₄⁺, N₂H₄ and NH₂OH… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy
18.
At 600 K the equilibrium constant of N₂ + 3H₂ ⇌ 2NH₃ is Kp = 4.43 × 10⁻³ bar⁻²… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
19.
A plant feeds 28.0 kg of nitrogen and 10.0 kg of hydrogen into a reactor… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
20.
A student studies four species: NH₄⁺, NCl₃, PCl₅ and N₂O₅… New
High School (11–12) · Groups 15 and 16: Nitrogen and Oxygen FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy