The standard enthalpy of neutralization of strong acid and strong base is -57.3 kJ textequiv- 1 . If the enthalpy of neutralization of the first proton of aqueous H2S is -33.7 kJmol- 1 then the (( textpK) texta)1 of H2S is

Questions from NTA Abhyas 2022

1. An alkene on ozonolysis gives a mixture of two carbonyl compounds. Mixture on Clemmensen reduction gives just one alkane . is the lowest alkane which in pure form can not be prepared by standard Wurtz method. is

2. A cation is in the centre touches three anions. Assume that the anions also touch each other. The limiting radius ratio, is

3. Blue colour of alkali and alkaline earth metals in liquid is due to

4. Which of the following oxides is strongly basic?

5. In a box hydroiodic acid is taken. After equilibrium the concentration of is found to be . The concentration of at equilibrium in , is

Chemistry Most Viewed Questions

1. If for a certain reaction is at , the value of (in for which the same reaction will be spontaneous at the same temperature is

NEET 2020

2. If of a non-electrolyte solute is dissolved in of n-octane to reduce its vapour pressure to , the molar mass (in of the solute is [Given that molar mass of n-octane is

NEET 2020 Solutions

3. An organic compound contains (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of is is ]

NEET 2021 Some Basic Concepts of Chemistry

4. At standard conditions, if the change in the enthalpy for the following reaction is Given that bond energy of and is and , respectively, what is the bond energy (in of ?

NEET 2020

5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm. The molality of the solution is
[Given that molecular mass of NaOH = 40 g mol]

NEET 2019 Some Basic Concepts of Chemistry

Latest Updates