
Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating is continued in a closed furnace such that the contents undergo self-reduction. The weight (in kg) of produced per kg of consumed is ……
[Atomic weight in
Answer
510.3k+ views
Hint:Here in this question, Galena(an ore) undergo in self-reduction process which means the cations of the less electropositive metals like may be reduced without the use of any additional reducing agent and the gram per moles is the mass of a substance in grams but numerically equal to its nuclear weight. It is also called gram-molecular weight. If we see, take an example like a gram per mole of oxygen is 16g, and is 207 g.
Complete step by step answer:
From our given data and conditions, as we need to calculate the weight of produced per kg of .
In the reaction it is involved in the extraction of from galena.
,
Therefore, use of 1 kg of means 1000g of is used there.
Moles of =
In this, molecular mass of
Moles of
So, According to stoichiometry,
No of moles of = No. of moles of Pb
Which is equal to
Then, Mass of Pb =No. of moles of Pb molecular mass of Pb.
Mass of Pb
Further we have to convert 6470 into Kg. where 1 Kg.=1000g.
Mass of Pb=6.47kg.
Additional information: Here is an interesting information, Galena is the world primary ore of lead. It is a lead sulphide mineral with a chemical composition of Pbs. Galena is also called lead glance, a grey lead sulphide Pbs. It is often mined as a source of silver as well as lead and the molecular weight is also known as the molecular mass. This is almost the same as the atomic weight. So, let us take an example, the atomic weight is equal to the molecular mass of oxygen which is 16g and for Pb(lead) is 207g.
Note:
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals.
Complete step by step answer:
From our given data and conditions, as we need to calculate the weight of
In the reaction it is involved in the extraction of
Therefore, use of 1 kg of
Moles of
In this, molecular mass of
Moles of
So, According to stoichiometry,
No of moles of
Which is equal to
Then, Mass of Pb =No. of moles of Pb
Mass of Pb
Further we have to convert 6470 into Kg. where 1 Kg.=1000g.
Mass of Pb=6.47kg.
Additional information: Here is an interesting information, Galena is the world primary ore of lead. It is a lead sulphide mineral with a chemical composition of Pbs. Galena is also called lead glance, a grey lead sulphide Pbs. It is often mined as a source of silver as well as lead and the molecular weight is also known as the molecular mass. This is almost the same as the atomic weight. So, let us take an example, the atomic weight is equal to the molecular mass of oxygen which is 16g and for Pb(lead) is 207g.
Note:
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
Which are the Top 10 Largest Countries of the World?

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE

What is the Full Form of PVC, PET, HDPE, LDPE, PP and PS ?
