Chemistry questions
29404 published questions with worked solutions.
- Solubility of calcium phosphate (molecular mass, M) in water is W g per 100 mL at 25 ^ . Its solubility product at 25 ^ will be...
- If S_1, S_2, S_3 and S_4 are the solubilities of AgCl in water, in 0.01 M CaCl_2 , in 0.01 M NaCl and in 0.05 M AgNO_3...
- Three sparingly soluble salt that have same solubility products are given below. I. A_2X II. AX III. AX_3 Their solubilities...
- Given, Ag(NH_3)_2^+ Ag^+ + 2NH_3 ; K_C = 6.2 10^ -8 and K_ sp of AgCl is 1.8 10^ -10 at 298 K. Calculate concentration of the...
- pH of saturated solution of Ba(OH)_2 is 12. The value of solubility product of K_ sp of Ba(OH)_2 is
- What is the value of molar solubility of Ni(OH)_2 in 0.10 M NaOH. If is; then the ionic product of Ni(OH)_2 is 2.0 10^ -15 .
- What is the minimum pH of a solution having concentration 0.10 M of Mg^ 2+ , from which Mg(OH)_2 will not precipitate? [K_ sp...
- The p K_a of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in human stomach is about 2-3 and the pH in the small...
- A precipitate of AgCl is formed when equal volumes of the following are mixed [K_ sp for AgCl = 10^ -10 ]
- A decimolar solution of ammonium hydroxide is ionised to the extent of 1.3%. If 1.3 = 0.11, what is the pH of the solution?
- Conjugate acid of a weak base is always stronger. The decreasing order of basic strength of the following conjugate bases is OH^-...
- The ionisation constant of benzoic acid is 6.46 10^ -5 and K_ sp for silver benzoate is 2.5 10^ -13 . How many times is silver...
- The ionisation constant of chloroacetic acid is 1.35 10^ -3 . The pH of 0.1 M acid and its 0.1 M sodium salt solution are...
- pH of which of the following solutions is highest?
- What mole of Ca(OH)_2 is dissolved in 250 mL aqueous solution to give a solution of pH 10.65, assuming full dissociation?
- K_a for HCN is 5 10^ -10 at 25 ^ . For maintaining a constant pH = 9, the volume of 5 M KCN solution required to be added to 10...
- If the solubility product of BaSO_4 is 15 10^ -10 in water, its solubility, in moles per litre, is
- Solubility of BaF_2 in a solution of Ba(NO_3)_2 will be represented by the concentration term
- For a concentrated solution of a weak electrolyte A_xB_y of concentration C, the degree of dissociation is given as
- Solubility product constant (K_ sp ) of salts of types MX, MX_2 and M_3X at temperature T are 4.0 10^ -8 , 3.2 10^ -14 and 2.7...