Ncert Solutions Chemistry Class 11th
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The halide which is inert to water is :
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The halide which is inert to water is :
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Sometimes, when maximum covalency is obtained, the halides become inert to water, thus SF? (or similarly CCl? ) is stable. This is because SF? is coordinately saturated and sterically hindered. Thus, SF? is inert to water, because of kinetic rather than thermodynamic factor.
A. PCl? + 4H? O → H? PO?
Upvote 
A mixture of 2 mol of carbon monoxide and 1 mol of oxygen in a closed vessel is ignited to get carbon dioxide, then :
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A mixture of 2 mol of carbon monoxide and 1 mol of oxygen in a closed vessel is ignited to get carbon dioxide, then :
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2CO (g) + O? (g) → 2CO? (g)
Δn_g = 2 – (2 + 1) = -1
ΔH = ΔE + Δn_g RT or ΔH = ΔE – 1RT
i.e. ΔH < ΔE
Upvote The function of “sodium pump” is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump ?
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The function of “sodium pump” is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump ?
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The process of moving sodium and potassium ions across the cell membrane is an active transport process involving the hydrolysis of ATP to provide the necessary energy.
Upvote Which of the following can react with both HCl and NaOH ?
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Which of the following can react with both HCl and NaOH ?
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As Zn (OH)? , BeO, Al? O? are amphoteric, so they can react with both HCl and NaOH.
Upvote Which of the following combination will produce H2 gas ?
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Which of the following combination will produce H2 gas ?
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i. Zn + 2NaOH → Na? ZnO? + H?
ii. 4Au + 8NaCN + O? + 2H? O → 4Na [Au (CN)? ]+ 4NaOH
iii. Cu + 4HNO? → Cu (NO? )? + 2NO? + 2H? O
(conc.)
Upvote Which among the following is a false statement ?
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Which among the following is a false statement ?
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(A) SiO? has three-dimensional network structure of Si – O bonds; while carbon dioxide consists of discrete CO? molecules. SiO? is solid, whereas CO? is a gas
(B) Because of its great affinity for oxygen, Si always occurs as the oxide, silica (SiO? ) or in the form of silicates, which are the compo
Upvote For the reaction A(g) -> B(g) the value of the equilibrium constant at 300K and 1 atm is equal to 100.0 The value of <!-- [if gte mso 9]><xml>
(Rounded off to the nearest integer)
[R = 8.31 J mol-1 K-1 and In 10 = 2.3]
For the reaction A(g) -> B(g) the value of the equilibrium constant at 300K and 1 atm is equal to 100.0 The value of <!-- [if gte mso 9]><xml>
(Rounded off to the nearest integer)
[R = 8.31 J mol-1 K-1 and In 10 = 2.3]
A (g) -> B (g) KP = 100
at 300 K and 1 atm
Using
=-R × 300 × 2 × 2.3
Upvote Number of amphoteric compounds among the following is___________.
(a) BeO (B) BaO (c) Be(OH)2 (d) Sr(OH)2
Number of amphoteric compounds among the following is___________.
(a) BeO (B) BaO (c) Be(OH)2 (d) Sr(OH)2
Beo & Be (OH)2 are amphoteric in nature, because they react with both acid and base
Upvote The gas released during anaerobic degradation of vegetation may lead to:
The gas released during anaerobic degradation of vegetation may lead to:
Methane gas is produced during anaerobic degradation of vegetation that leads to global warming so considered as greenhouse gas like CO2. Also it causes cancer.
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