Assignment Help - homework help

  Properties of Lead

Properties of Lead:

Physical properties:

1. The lead is a bluish grey metal with a bright gleam.
2. It is soft and can be slice with a knife and drawn into a wire and rolled into sheet.
3. It is not a good conductor of electricity and heat.
4. It marks on paper.

Chemical properties:

1. Action of air:

i) It is not affected by dry air however in moist air a layer of lead carbonate or lead hydroxide is deposited on its surface that protects it from additional action of air.

ii) Whenever heated in air or oxygen, lead is oxidized to litharge (i.e., PbO) and red lead (i.e., Pb3O4)

2Pb + O2 → 2PbO
3Pb + 2O2 → Pb3O4

2. Action of water:

Lead is not attacked by pure water in the deficiency of air; however water having dissolved air has a solvent action on it due to the formation of lead hydroxide (i.e., a poisonous substance). This phenomenon is termed as Plumbo solvency.

2Pb + O2 + 2H2O →   2Pb (OH)2

3. Action of acids:

i) Dilute H2SO4 and HCl encompass no action on lead.

ii) Hot Conc. H2SO4 releases SO2 however the reaction is retarded by the formation of an insoluble layer of lead sulphate.

Pb + 2H2SO4 → PbSO4 + 2H2O + SO2 ↑

iii) Concentrated HCl develops hydrogen and also forms Chloroplumbic acid

Pb + 2HCl → PbCl2+H2 ↑
PbCl2+ 2HCl ↔ H2PbCl4
                     chloroplumbic acid

Uses: Lead is used:

1. For manufacturing lead pipes,

2. For constructing telegraph and telephone wires,

3. In the production of bullets and lead accumulators,

4. In lead chambers, for the making of sulphuric acid,

5. For manufacturing alloys such as solder, pewter and type metal,

6. For making tetraethyl lead (Pb(C2H5)4) that is employed as an additive to petrol to prevent the knocking.

 

Latest technology based Chemistry Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in P Block elements homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for P Block elements, project ideas and tutorials. We provide email based P Block elements homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in P Block elements. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Inorganic-Chemistry Homework Help and assignment help services. They use their experience, as they have solved thousands of the Chemistry assignments, which may help you to solve your complex issues of P Block elements. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.