Ncert Solutions Chemistry Class 11th

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

Which of the following gases can be liquefied most easily?

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

NH₃ can be liquefied most easily due to presence of strong intermolecular H-bonding among NH₃ molecules.

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

The correct order of atomic radii in group 13 element is

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Correct order or atomic radii is

Tl > ln > Al > Ga > B

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

Which one of the following ions has the largest size in aqueous solution?

1 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Li⁺ has the largest size in aqueous solution due to its high polarizing power.

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

The molarity of 20 volume H₂O₂ is nearly

4 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Volume strength of H₂O₂ = Molarity × 11.2

$∴ M o l a r i t y = \frac{V}{11.2} = \frac{20}{11.2} = 1.78 \approx 1.8$

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

The maximum prescribed concentration of manganese in drinking water is

5 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

The maximum prescribed concentration of manganese in drinking water is 0.05 ppm.

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

Which of the following is not an acidic oxide?

2 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

Kindly go therough the solution

NO is a neutral oxide.

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Thermodynamics

The ionization enthalpy of Na⁺ formation from Na_(g)is 495.8 kJ mol^-1, while the electron gain enthalpy of Br is - 325.0 kJ mol^-1. Given the lattice enthalpy of NaBr is - 728.4 kJ mol^-1. The energy for the formation of NaBr ionic solid is (-) -------------- × 10^-1kJ mol^-1.

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Kindly consider the following figure

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

A car tyre is filled with nitrogen gas at 35 psi at 27°C. It will burst if pressure exceeds 40 psi. The temperature in °C at which the car tyre will burst is--------------. (Rounded – off to the nearest integer)

2 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

$\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}} \Rightarrow \frac{35}{300} = \frac{40}{T_{2}}$

$∴ T_{2} = \frac{40 \times 300}{35} = 342.85 K$

$T_{2} (° C) = 69.707 \approx 70 ° C$

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Thermodynamics

The reaction of cyanamide, NH₂CN_(s) with oxygen was run in a bomb calorimeter and $Δ U$ was found to be -742.24 kJ mol^-1. The magnitude of $Δ H_{298}$ for the reaction

$N H_{2} C N_{(S)} + \frac{3}{2} O_{2 (g)} \to N_{2 (g)} + O_{2 (g)} + H_{2} O_{(I)} i s$ ------------- kJ. (Rounded off to the nearest integer)

[Assume ideal gases and R = 8.314 J mol^-1 K^-1]

7 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

$Δ U = - 742.24 k J / m o l e Δ H_{298} = ?$

NH₂CN (s) + $\frac{3}{2}$ O₂ (g) ® N₂ (g) + O₂ (g) + H₂O (l)

= $- 742.24 + \frac{1}{2} \times \frac{8.314}{1000} \times 298$

$- 742.24 + 1.238 = - 741.002 \approx - 741 k J / m o l$

So, magnitude of $Δ H$ = 741 kJ/mol.

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New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Class 11th

Identify A in the given chemical reaction.

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Kindly consider the following figure

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Ncert Solutions Chemistry Class 11th

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