Advertisements
Advertisements
Question
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.
Options
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
Both A and R are false.
Advertisements
Solution
Both A and R are true and R is the correct explanation of A.
Explanation:
As, \[\ce{H - A}\] bond strength is a more important factor in determining acidity than its polar nature. As the size of A increases down the group, \[\ce{H - A}\] bond strength decreases.
APPEARS IN
RELATED QUESTIONS
It has been found that the pH of a 0.01M solution of an organic acid is 4.15. Calculate the concentration of the anion, the ionization constant of the acid and its pKa.
Assuming complete dissociation, calculate the pH of the following solution:
0.005 M NaOH
Assuming complete dissociation, calculate the pH of the following solution:
0.002 M KOH
Calculate the pH of the following solutions:
0.3 g of Ca(OH)2 dissolved in water to give 500 mL of solution.
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.
Calculate the pH of the resultant mixtures: 10 mL of 0.2M Ca(OH)2 + 25 mL of 0.1M HCl.
Calculate the pH of the resultant mixtures: 10 mL of 0.01M H2SO4 + 10 mL of 0.01M Ca(OH)2.
Choose the most correct answer :
For pH > 7 the hydronium ion concentration would be _________.
Answer the following in one sentence :
Calculate the pH of 0.01 M sulphuric acid.
Answer the following in brief :
The pH of a weak monobasic acid is 3.2 in its 0.02 M solution. Calculate its dissociation constant.
Calculate the pOH of 10-8 M of HCl.
Which of the following when dissolved in water results in neutral solution?
What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed?
Define pOH.
Derive relationship between pH and pOH.
Define pOH.
Derive relationship between pH and pOH.
Define pH.
Define pOH.
Define the following term:
pH
