Chemistry

Which one of the following graphs is not correct for ideal gas?

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Chemistry Ncert Solutions Chemistry Class 11th

Contributor-Level 9

For ideal gas
PM = dRT
d = [PM]/R * 1/T
So graph between dV ST is not straight line

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10 months ago

While titration dilute HCl solution with aqueous NaOH, which of the following will not be required?

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Contributor-Level 9

In this acid base Titrating there is no use of Bunsen burner and measuring cylinder other laboratory equipments will be required for getting the end point of titration.

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10 months ago

The statement that is not true about ozone is:

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Contributor-Level 9

In presence of sunlight CFC's molecule divides & release chlorine free radical, which react with ozone give chlorine monoxide radical (CIO°) and oxygen.
CF? Cl? (g) → C (g) + C? Cl (g)
Cl° (g) + O? (g) → ClO° (g) + O? (g)
ClO° (g) + O (g) → Cl° (g) + O? (g)

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10 months ago

Which of the following compounds will show retention in configuration on nucleophile substitution by OH? ion?

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Contributor-Level 9

Reaction path is SN2 because OH? is strong nucleophile, but hydroxyl ion will not attack on chiral centres and so there is retension of configuration.

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10 months ago

A spherical balloon of radius 3 cm containing helium gas has a pressure of 48 * 10?³ bar. At the same temperature, the pressure, of a spherical balloon of radius 12 cm containing the same amount of gas will be * 10? bar

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Contributor-Level 10

P? V? =P? V? 48*10? ³*3³ = P? *12³. P? =750*10?

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10 months ago

The elevation of boiling point of 0.10 m aqueous CrCl₃·xNH₃ solution is two times that of 0.05 m aqueous CaCl₂ solution. The value of x is [numerical value]. [Assume 100% ionisation of the complex and CaCl₂, coordination number of Cr as 6, and that all NH₃ molecules are present inside the coordination sphere]

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Contributor-Level 10

i of CaCl? =3. Molality eff=0.15. Molality eff of complex=0.3. [Cr (NH? )? Cl]Cl?

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10 months ago

In Carius method of estimation of halogen, 0.172 g of an organic compound showed presence of 0.08 g of bromine. Which of these is the correct structure of the compound?

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Chemistry Chemistry Chemical Bonding and Molecular Structure

Contributor-Level 9

Mole of Bromine = 0.08/80 = 10? ³ mole
Molar mass of compound = 0.172/M = 10? ³
M = 0.172/10? ³ = 172g
Molar mass of

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10 months ago

Potassium chlorate is prepared by the electrolysis of KCl in basic solution 6OH⁻+Cl⁻→ClO₃⁻+3H₂O+6e⁻. If only 60% of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce 10 g of KClO₃ using a current of 2 A is [numerical value] (Given: F=96,500 Cmol⁻¹; molar mass of KClO₃=122 g mol⁻¹)

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Contributor-Level 10

n (KClO? )=10/122. No. of F = (10/122)*6. No. of F supplied= (100/122). t=11hrs.

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10 months ago

In an estimation of bromine by Carius method, 1.6 g of an organic compound gave 1.88 g of AgBr. The mass percentage of bromine in the compound is [numerical value] (Atomic mass, Ag=108, Br=80 g mol?¹)

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Contributor-Level 10

AgBr=1.88g. Br=0.8g. %Br= (0.8/1.6)*100=50%.

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10 months ago