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1 molecule C2H6 (30 g) always gives 2 molecules CO2 (88 g). Therefore, mass of Ethane required for 22 g CO2 = 30 × 22 / 88 = 7.5 g. // No of moles of C2H6 = 7.5/30 = 0.25 mol. //

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Shivam Chaudhary 4 years ago

hlo mam

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What pressure must be applied to a given sample of a gas in order to compress it to a 2/5 of its original volume at same temperature?

Posted by Gori Jain 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 4 years ago

As per Boyle's law of chemical behaviour, at a constant T, P ~ 1/V. Therefore, to compress it to 2/5 th the volume, pressure required would be [ 1/(2/5) = 5/2 ] times the original pressure.

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for sodium atom number of electrons with m=0 will be

Posted by Ayush Prajapati 4 years ago

CBSE > Class 11 > Chemistry

2 answers

Anjan Karthi 4 years ago

I mean, 7 electrons

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Anjan Karthi 4 years ago

2 electrons.

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The equilibrium constant for the reaction SO3 (g) ⇌ SO2 (g) + 12 O2 (g) is 0.18 at 900 K. What will be the equilibrium constant for the reaction SO2 (g) + 12 O2 (g) ⇌ SO3 (g)?

Posted by Anshu Dudi 4 years ago

CBSE > Class 11 > Chemistry

2 answers

Shobhit Kumar 4 years ago

For the reverse rax", equilibrium constant become 1/k So 1/0.18=5.6

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Mohd Daud 4 years ago

For the reverse reaction, equilibrium constant becomes 1/k , So 1/0.18= 5.55

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Define 2nd law of thermodynamics.

Posted by Pranav Chaudhary 4 years ago

CBSE > Class 11 > Chemistry

5 answers

Kartik Sharma 3 years, 11 months ago

Second law of thermodynamics says that universe as a increase enthropy because the universe is become huge every year

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Avantika Sahu 4 years ago

Alkali metals are those metal which have only electron in outermost of the cell

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Anjan Karthi 4 years ago

Li (Lithium) , Na (Sodium), K (Potassium), Rb (Rubidium) , Cs (Caesium) , Fr (Francium) .

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Nancy Dhakad 4 years ago

Alkali metals kise kha jata hai

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Md Zeeshan 4 years ago

The second law of thermodynamics means hot things always cool unless you do something to stop them.

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Important topic to study in chapter 5,6,8,9,11 Please help me

Posted by Ashish Yadav 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Md Zeeshan 4 years ago

Subject

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To prepare a crystal of pure copper sulphate from a given impure sample of blue vitriol

Posted by Sushant Singh 4 years ago

CBSE > Class 11 > Chemistry

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Give the iupac name to given structure CH3–CH2–CH2–O–CH(CH3)–CH3

Posted by Anshika Patel 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 4 years ago

Isopropyl propyl ether.

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When MnO4- react with H2O2 in basic medium the following species are involved except

Posted by Naved Alam 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 4 years ago

[MnO4-]→[Mn2+] and H2O2 → O2.

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Differentiate between pi and sigma bond

Posted by Mazia Beigh 4 years ago

CBSE > Class 11 > Chemistry

4 answers

Prabhjot Kaur 4 years ago

Pi bond is weak bond but sigma bond is strong bond and pi bonds are formed by side to side overlapping but sigma bond is formed by head to head overlapping

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Saurabh Hans 4 years ago

Pi bond exist independently but sigma bond not exist independently it always exist with pi bond and pi bond is stronger than sigma bond

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Shubham Verma 4 years ago

bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axis σ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger.

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Anjan Karthi 4 years ago

σ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger. There is proper distribution of electron density across the internuclear axis. Present mostly as SINGLE bonds between atoms. π bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axis. It is more weaker than σ bonds. They are usually present as multiple bonds alongside single bonds. Electron density is distributed in an unorganized manner.

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How Group 1 elements reacts with water

Posted by Arvit Singh Arvit Singh 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Jatin Kumar 4 years ago

Group 1 elements reacts vigorously with water and release hydrogen gas.

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How group 1 elements show reactivity towards air

Posted by Arvit Singh Arvit Singh 4 years ago

CBSE > Class 11 > Chemistry

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Write definition of hybridization

Posted by Rahul Verma 4 years ago

CBSE > Class 11 > Chemistry

4 answers

Saurabh Hans 4 years ago

Hybridization is the process of intermixing of two same or nearly same orbitals

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Marshal Kasana 4 years ago

Hybridization is nothing

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Anjan Karthi 4 years ago

It is the process of intermixing of atomic orbitals of similar sizes and enthalpies so as to redistribute their energies and form new set of orbitals with better efficiency to form bonds.

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Tanisha Upadhayay 4 years ago

Concept of mixing atomic orbital Into new hybrid orbitals

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What are electropositive atom

Posted by Tanisha Upadhayay 4 years ago

CBSE > Class 11 > Chemistry

2 answers

Aditi Jain 4 years ago

Electropositive Ions are ions which readily donate or lose ions. Ex: Sodium (Na)

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Anjan Karthi 4 years ago

Atoms which are capable of losing or donating electrons. They act as good reducing agents and examples are metal atoms.

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Draw isotherms of CO2 at various temperature given by Thomas Anderson. Explain briefly

Posted by Manisha Sarawat 4 years ago

CBSE > Class 11 > Chemistry

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What are reagents?

Posted by Anand Bharti 4 years ago

CBSE > Class 11 > Chemistry

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Convert pentane to pentane chloride

Posted by Abhishek Kumar 4 years ago

CBSE > Class 11 > Chemistry

1 answers

Abhishek Kumar 4 years ago

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Explain daltan s atomic theory

Posted by Sumit Gupta 4 years ago

CBSE > Class 11 > Chemistry

2 answers

Diksha Thakur 4 years ago

1. All matter is comprised of tiny, definite particles called atoms. 2. Atoms are indivisible and indestructible. 3. All atoms of a particular element share identical properties, including weight. 4. Atoms of different elements contain different mass. And 5. Atoms of different elements combine in fixed whole-number ratios when forming compounds.

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Abhishek Kumar 4 years ago

M nhi btaunga

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2Co=

Posted by Faheem Ahmed 4 years ago

CBSE > Class 11 > Chemistry