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identify the oxidant and reductant in the following reactions (1) 2zn(s) + o2 →2znao(s) (2) i2(g) +h2s(g) → 2hi(g) + s(g)

Posted by Devansh Shekhawat 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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can the same element have different oxidation numbers in different compounds justify

Posted by Devansh Shekhawat 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Manjeet Singh 8 years, 1 month ago

Yes there are many like only molecular oxidation no. Of O2 is -2 but oxidation no. Of o in Co2 is 2

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What is boric acid?

Posted by Senthamizh Sagayaraj 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Ashish Soni 8 years, 1 month ago

,????????????????????????????

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Ansh Singh 8 years, 1 month ago

Tmhara thobda

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What is Syngas?

Posted by Robin Media 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Define standard enthalpy of reaction

Posted by Mayank Kumar 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Akash Verma 8 years, 1 month ago

All process which have enthalpy at stand temperature and pressure i.e(STP) known as standard enthalpy. Denoted by ∆H°...

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3uses of isotopes and isobars

Posted by Rubham Singh 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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what is standard hydrogen electrode

Posted by Punith Nara 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Can anyone say some important formula in some basic concepts of chemistry

Posted by Janani Jananis 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Akshat Vashishth 8 years, 1 month ago

Molarity=no. of moles of solute/volume of solution in L Molality =no.of moles of solute /mass of solvent in kg Mole fraction =no.of moles of solute /no. of moles of solution

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Relation between cp and cv

Posted by Pawan Bharti 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Sandhya Singh 8 years, 1 month ago

Cp-Cv=R

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State directive influence of m-directing group - COOH

Posted by Mrs Shroff Kriti 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Explain why is sodium less reactive than potassium

Posted by Aashish Tomar 8 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Mannu Mangali 8 years, 1 month ago

Ionization enthalpy of sodium is greater than potassium

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Manjeet Singh 8 years, 1 month ago

Reactivity decrease from moving down the group

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Abhishek Yadav 8 years, 1 month ago

Thus, in potassium, the outermost electron is better shielded from the attractive force of the nucleus. It follows, therefore, that this outermost electron is more easily lost than it is in sodium, so potassium can be converted to ionic form more readily than sodium. Hence, potassium is more reactive than sodium.

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Copper oxide obtained by heating copper carbonate or copper nitrate contains copper and oxygen in the same ratio by mass. which law is illustrated by this observation? State the law.

Posted by Shreenivasan Rajendren 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Why does potassium lighter than sodium

Posted by Gunada Das 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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NaH2PO2 is not an acid. Can someone explain??

Posted by Pradisha Baranwal 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Define viscosity

Posted by Manish Kumawat 8 years, 1 month ago

CBSE > Class 11 > Chemistry

4 answers

Mannu Mangali 8 years, 1 month ago

Property of a fluid that resists the force tending to cause the fluid flow

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Manjeet Singh 8 years, 1 month ago

The force between layers of liquid

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Bhuvanlal Sahu 8 years, 1 month ago

Viscosity is internal rasistant to flow in liqued which aresses due to the internal frectio between learce of liqued as this stap to another why liqued flow

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Amar Kumar 8 years, 1 month ago

Viscosity is the magnitude of internal friction in a fluid, as measured by the force per unit area resisting uniform flow.

Viscosity is a fluid's resistance to flow. Water runs through a funnel really quickly because it has very little resistance to flow or Viscosity

The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. For liquids it corresponds to the informal concept of thickness for example honey has a much higher viscosity than water.

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Do you think that i do flirting please comment

Posted by Manjeet Singh 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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What is latent heat

Posted by Mohammad Zaid Siddiqi 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Bhuvanlal Sahu 8 years, 1 month ago

The lettent heat of a substance me be diffined as the quantity of heat requaired to change the unit mass of substance complitly from its one state to another state. Two typse of lettent heat * lettent heat of fusion *lettent heat of vibration

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What do you understand by the term autoprotolgsis?

Posted by Koteswara Rao 8 years, 1 month ago

CBSE > Class 11 > Chemistry

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Balance the following reaction by the ion exchange mathod

Posted by Bhuvanlal Sahu 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Manjeet Singh 8 years, 1 month ago

Abe reaction kaha hai ?

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What is inert pair effect

Posted by Sahil Kumar 8 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Amar Kumar 8 years, 1 month ago

The inert-pair effect refers to the empirical observation that the heavier elements of groups 13–17 often have oxidation states that are lower by 2 than the maximum predicted for their group.

For example, although an oxidation state of +3 is common for group 13 elements, the heaviest element in Group 13, thallium (Tl), is more likely to form compounds in which it has a +1 oxidation state.

The inert pair effect says that the ns² valence electrons of metallic elements, especially the 5s² and 6s² pairs that follow the second and third row of transition metals, are less reactive than would be expected based on periodic trends such as effective nuclear charge, atomic sizes, and ionization energies.

In, Tl, Sn, Pb, Sb, Bi, and, Po do not always show their expected maximum oxidation states. Rather they form compounds in which their oxidation states are 2 less than what would be expected.

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Rules of Nomenclature of compounds containing substituents other than Alkyl group.....

Posted by Kiranpreet Kaur 8 years, 1 month ago

CBSE > Class 11 > Chemistry