Please select a subject first
Advertisements
Advertisements
Calculate the pH of the following solution:
1mL of 13.6 M HCl is diluted with water to give 1 litre of solution.
Concept: undefined >> undefined
The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.
Concept: undefined >> undefined
Advertisements
The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Calculate its ionization constant and pKb.
Concept: undefined >> undefined
The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.
Concept: undefined >> undefined
If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?
Concept: undefined >> undefined
The solubility of Sr(OH)2 at 298 K is 19.23 g/L of solution. Calculate the concentrations of strontium and hydroxyl ions and the pH of the solution.
Concept: undefined >> undefined
The pH of 0.1M solution of cyanic acid (HCNO) is 2.34. Calculate the ionization constant of the acid and its degree of ionization in the solution.
Concept: undefined >> undefined
Calculate the pH of the resultant mixtures: 10 mL of 0.2M Ca(OH)2 + 25 mL of 0.1M HCl.
Concept: undefined >> undefined
Calculate the pH of the resultant mixtures: 10 mL of 0.01M H2SO4 + 10 mL of 0.01M Ca(OH)2.
Concept: undefined >> undefined
Calculate the pH of the resultant mixtures: 10 mL of 0.1M H2SO4 + 10 mL of 0.1M KOH
Concept: undefined >> undefined
Show the distribution of electrons in oxygen atom (atomic number 8) using orbital diagram.
Concept: undefined >> undefined
Acidity of \[\ce{BF3}\] can be explained on the basis of which of the following concepts?
Concept: undefined >> undefined
In which of the following solvents is silver chloride most soluble?
Concept: undefined >> undefined
The aqueous solution of sugar does not conduct electricity. However, when sodium chloride is added to water, it conducts electricity. How will you explain this statement on the basis of ionisation and how is it affected by concentration of sodium chloride?
Concept: undefined >> undefined
Assertion (A): Increasing order of acidity of hydrogen halides is \[\ce{HF < HCl < HBr < HI}\]
Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table, \[\ce{H - A}\] bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.
Concept: undefined >> undefined
Which of the following compounds contain all the carbon atoms in the same hybridisation state?
(i) H – C ≡ C – C ≡ C – H
(ii) CH3 – C ≡ C – CH3
(iii) CH2 = C = CH2
(iv) CH2 = CH – CH = CH2
Concept: undefined >> undefined
For testing halogens in an organic compound with AgNO3 solution, sodium extract (Lassaigne’s test) is acidified with dilute HNO3. What will happen if a student acidifies the extract with dilute H2SO4 in place of dilute HNO3?
Concept: undefined >> undefined
How much energy is required to ionise an H atom if the electron occupies n = 5 orbit? Compare your answer with the ionization enthalpy of H atom (energy required to remove the electron from n =1 orbit).
Concept: undefined >> undefined
Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?
Concept: undefined >> undefined
Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?
Concept: undefined >> undefined
