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  1. Problems
  2. /The p-Block Elements
  3. /Groups 13 and 14: Boron and Carbon Families

Groups 13 and 14: Boron and Carbon 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
30 problems
Exam:
Type:
1.
A flask holds a mixture of 6.41 g of calcium carbide (64.10 g/mol) and 2.88 g of aluminium carbide… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
2.
A sample of 100.0 g of lead(II) oxide (223.20 g/mol) is heated in air at about 750 K until it is… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
3.
Here are ten oxides: B₂O₃, Al₂O₃, In₂O₃, Tl₂O, CO, CO₂, SiO₂, GeO₂, SnO₂ and PbO₂… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+19A-LevelIBStemPy LabStemPy Lab
Medium
4.
Lithium aluminium hydride is made by 4LiH + AlCl₃ → LiAlH₄ + 3LiCl… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+19A-LevelIBStemPy LabStemPy Lab
Medium
5.
Magnesium silicide (76.70 g/mol) of mass 15.34 g reacts with excess hydrochloric acid and forms… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
6.
Boron trichloride (117.16 g/mol) of mass 23.43 g is poured into water: BCl₃ + 3H₂O → B(OH)₃ + 3HCl… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+19A-LevelIBStemPy LabStemPy Lab
Medium
7.
Thallium forms a compound with the formula TlI₃… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
8.
A sample of 5.43 g of mercury(II) chloride (271.49 g/mol) is reduced by tin(II) chloride (189.61… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+19A-LevelIBStemPy LabStemPy Lab
Medium
9.
Lead(IV) oxide reacts with concentrated hydrochloric acid and gives chlorine: PbO₂ + 4HCl → PbCl₂ +… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
10.
Thallium(III) can oxidise tin(II) to tin(IV) in a two-electron reaction: Tl³⁺ + Sn²⁺ → Tl⁺ + Sn⁴⁺… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesNEETA-LevelIB+19A-LevelIBStemPy LabStemPy Lab
Medium
11.
A zeolite has the formula Na₁₂[(AlO₂)₁₂(SiO₂)₁₂]· 27H₂O and a molar mass of 2191 g/mol… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
12.
A plant makes a silicone from 1.00 kg of silicon (28.09 g/mol) by the steps Si + 2CH₃Cl →… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
13.
Tremolite has the formula Ca₂Mg₅(Si₄O₁₁)₂(OH)₂… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
14.
A solid mixture of calcium carbonate and sodium hydrogencarbonate has a mass of 10.00 g… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
15.
A student bubbles carbon dioxide into limewater that holds 1.85 g of calcium hydroxide (74.09… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
16.
Coke burns in a limited supply of air so that all of the oxygen forms carbon monoxide: 2C + O₂ →… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
17.
A graphene sheet is a plane of hexagons… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
18.
At room temperature and ordinary pressure, graphite is the more stable form of carbon by Δ G =… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesJEE MainA-LevelIB+21A-LevelIBStemPy LabStemPy Lab
Hard
19.
The unit cell of diamond is a cube with an edge of 356.7 pm, and it contains 8 carbon atoms… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
20.
A fullerene has 84 carbon atoms. Every carbon is bonded to three others, and the faces are 12… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
21.
Potash alum is KAl(SO₄)₂· 12H₂O with a molar mass of 474.37 g/mol… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBA-LevelIBStemPy LabStemPy Lab
Easy
22.
A thermite charge for welding a rail contains 2.70 kg of aluminium powder and the exact amount of… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
23.
An electrolytic cell for aluminium carries a current of 150 kA for 6.0 hours at a voltage of 4.30 V… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
24.
Diborane burns completely in oxygen: B₂H₆(g) + 3O₂(g) → B₂O₃(s) + 3H₂O(g)… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
25.
Boric acid behaves as a monobasic acid, B(OH)₃ + 2H₂O ⇌ [B(OH)₄]⁻ + H₃O⁺, with pKa = 9.24… New
High School (11–12) · Groups 13 and 14: Boron and Carbon FamiliesA-LevelIBAEEE (Amrita)+20A-LevelIBStemPy LabStemPy Lab
Hard
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