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Chemistry Class 12th

In the given reaction

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Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

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New answer posted

a year ago

Chemistry Class 11th

Consider the reaction

4HNO₃(l) + 3 KCl(s) → Cl₂(g) + NOCl(g) + 2H₂O(g) + 3KNO₃(s)

The amount of HNO₃ required to produce 110.0g of KNO₃ is

(Given: Atomic masses of H, O, N and K are 1, 16, 14 and 39, respectively)

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Payal Gupta

Contributor-Level 10

$4 H N O I_{3 (l)} + 3 K C l_{(s)} \to_{}^{} C l_{2 (g)} + N O C l_{(g)} + 2 H_{2} O (g) + 3 K N O_{3} (g)$

$↓$

4 moles of HNO₃ produced 3 mol of KNO₃

Here mole of produced KNO₃ = $\frac{110}{101}$

If 3 mol of KNO₃ produced by 4 moles of HNO₃

$∴$ 1 mole of KNO₃ produced by $\frac{4}{3}$ moles of HNO₃

and $\frac{110}{101}$ mole of KNO₃ produced by $\frac{4 * 110}{3 * 101}$ moles of HNO₃ = 1.45 mole of HNO₃

Hence mass of HNO₃= mole * mol.wt = 145 * 63 = 91.48 $\approx$ 91.5gm

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Chemistry Class 12th

Amongst the following, the major product of the given chemical reaction is

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Vishal Baghel

Contributor-Level 10

Kindly comsider the following figure

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Chemistry Organic Chemistry - Some Basic Principles and Tech

During halogens test, sodium fusion extract is boiled with concentrated HNO₃ to

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Vishal Baghel

Contributor-Level 10

Sodium fusion extract is boiled with conc. HNO₃ to remove NaCN and Na₂S.

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Chemistry Chemistry Organic Chemistry

Given below are two statements: one is labeled as Assertion A and the other is labeled as Reason R.

Assertion A: A mixture contains benzoic acid and naphthalene. THE pure benzoic acid can be separated out by the use of benzene.

Reason R: Benzoic acid is soluble in hot water.

In the light of the above statements, choose the most appropriate answer form the options given below:

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Vishal Baghel

Contributor-Level 10

Benzoic acid & naphthalene can be separated by crystallization. Benzoic acid is soluble is hot water but naphthalene is insoluble.

Assertion is incorrect & Reason is correct.

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Chemistry Environmental chemistry

Given below are two statements: one is labeled as Assertion A and the other is labeled as Reason R.

Assertion A: Polluted water may have a value of BOD of the order of 17 ppm.

Reason R: BOD is a measure of oxygen required to oxidize both the biodegradable and non-biodegradable organic material in water

In the light of the above statements, choose the most appropriate answer from the options given below.

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Vishal Baghel

Contributor-Level 10

Assertion : Clean water has BOD less than 5ppm. Highly polluted water has BOD greater than or equal to 17 ppm.

Reason : BOD is measure of oxygen required to oxidize only bio-degradable organic matter.

Thus Assertion (A) is correct & Reason (R) is wrong.

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a year ago

Chemistry Coordination Compounds

The metal ion (in gaseous state) with lowest spin-only magnetic moment value is

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Vishal Baghel

Contributor-Level 10

the lowest spin only magnetic moment for Ni⁺² because of minimum unpaired electron.

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a year ago

Chemistry Class 12th

The number of bridged oxygen atoms present in compound B formed form the following reaction is $P b {(N O_{3})}_{2} \overset{673 K}{\to} A + P b O + O_{2}$

$A \overset{D i m e r i s e}{\to} B$

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Vishal Baghel

Contributor-Level 10

$P b {(N O_{3})}_{2} \to_{673 K}^{Δ} P b O + \underset{(A)}{N O_{2}} + O_{2}$

$\underset{(A)}{N O_{2}} \to_{}^{D i m e r i s e} \underset{(B)}{N_{2} O_{4}}$

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a year ago

Chemistry Chemistry Electrochemistry

The correct order of reduction potentials of the following pairs is

A. Cl ₂/Cl^-

B. I₂/ I^-

C. Ag⁺ / Ag

D. Na⁺ / Na

E. Li⁺ / Li

Choose the correct answer from the options given below

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Vishal Baghel

Contributor-Level 10

$E_{C l_{2} / C l^{-}}^{0} = + 1.36 V$

$E_{l_{2} / l^{-}}^{0} = + 0.54 V$

$E_{A g^{+} / A g}^{0} = + 0.80 V$

$E_{N a^{+} / N a}^{0} = - 2.71 V$

$E_{L i^{+} / L i}^{0} = - 3.05 V$

$∴ E_{C l_{2} / C l^{-}}^{0} > E_{A g^{+} / A g}^{0} > E_{N a^{+} / N a}^{0} > E_{L i^{+} / L i}^{0}$

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New answer posted

a year ago

Chemistry Chemical Bonding and Molecular Structure

Given below are two statements one is labeled as Assertion A and the other is labeled as Reason R:

Assertion A: The amphoteric nature of water is explained by using Lewis acid/base concept

Reason R: Water acts as an acid with NH₃ and as a base with H₂S

In the light of the above statements choose the correct answer form the options given below:

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Vishal Baghel

Contributor-Level 10

$\underset{(a c i d)}{H_{2} S} + \underset{B a s e}{H_{2} O} ? H_{3} O^{+} + H S^{-}$

$\underset{(a c i d)}{H_{2} O} + \underset{(B a s e)}{N H_{3}} ? N H_{4} O H$

With H₂S water acts like base and with NH₃ it acts like acid.

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