Ncert Solutions Chemistry Class 11th
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250 mL of 0.5 M NaOH was added to 500 mL of 1 M HCl. The number of unreacted HCl molecules in the solution after complete reaction is_________ × 1021 (Nearest integer)
(NA = 6.022 ×1023)
250 mL of 0.5 M NaOH was added to 500 mL of 1 M HCl. The number of unreacted HCl molecules in the solution after complete reaction is_________ × 1021 (Nearest integer)
(NA = 6.022 ×1023)
NaOH + HCl -> NaCl + H2O
(milimole) t = 0 250 × 0.5 50
In a equilibrium mixture, the partial pressures are
The equilibrium constant Kp = ___________ × 10-2 (Nearest integer)
In a equilibrium mixture, the partial pressures are
The equilibrium constant Kp = ___________ × 10-2 (Nearest integer)
vapour pressure of benzene at 20°C = 70 torr
= vapour pressure of toluene at 20°C = 20 torr
Mixture is equimolar, XB = 0.5 and XM = 0.5
Total vapour pressure (PT) = 70 × 0.5 + 20 × 0.5 = 45 torr
Mole fraction of benzene in vapour phase
= 0.777 = 77.7 × 10-2 torr
Ans. = 78 (the nearest integer)
<p><strong>The species given below that does NOT show disproportionation reaction is:</strong></p>
The single largest industrial application of dihydrogen is:
The single largest industrial application of dihydrogen is:
Regarding industrial consumption of H2 manufacturing of NH3 is the largest applications.
The set in which compounds have different nature is:
The set in which compounds have different nature is:
B (OH)3 is orthoboric acid having acidic nature, while Al (OH)3 has amphoteric nature that is acidic and as well as basic
The metal that can be purified economically by fractional distillation method is:
The metal that can be purified economically by fractional distillation method is:
B (OH)3 is orthoboric acid having acidic nature, while Al (OH)3 has amphoteric nature that is acidic and as well as basic
Green chemistry in day-to day life is in the use of:
Green chemistry in day-to day life is in the use of:
Nowdays liquid CO2 used as washing clothes, because Cl2 and C2H2Cl4 are toxic
A s-block element (M) reacts with oxygen to form an oxide of the formula MO2. The oxide is pale yellow in colour and paramagnetic. The element (M) is:
A s-block element (M) reacts with oxygen to form an oxide of the formula MO2. The oxide is pale yellow in colour and paramagnetic. The element (M) is:
An alkali metal oxide of formula MO2 is super oxide which is formed by K and Rb. KO2 has pale yellow colour and paramagnetic nature, while alkaline earth metal oxides formula MO2 are peroxide and diamagnetic nature.
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The dihedral angles in H2O2 in gaseous phase is 90.2° and in solid phase is 111.5°
Reason R: The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces.
Choose the most appropriate answer from the options given below for A and R.
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The dihedral angles in H2O2 in gaseous phase is 90.2° and in solid phase is 111.5°
Reason R: The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces.
Choose the most appropriate answer from the options given below for A and R.
Following are the dihedral angles of H2O2 in gas phase and solid (Reverse with respect to question).
