Chemistry questions
29404 published questions with worked solutions.
- A 100 mL, 0.1 M solution of ammonium acetate is diluted by adding 100 mL of water. The pH of the resulting solution will be ( p...
- Which of the following combinations of CH_3COOH + NaOH would result in the formation of acidic buffer?
- The pH of a buffer solution will be equal to the p K_a of acid, only if
- pH of the buffer solution formed by mixing acetic acid and sodium acetate taken in equimolar concentration will be [Given: p K_a...
- pH of a buffer prepared by adding 10 mL of 0.10 M acetic acid to 20 mL of 0.1 M sodium acetate is equal to ( p K_a of CH_3COOH =...
- 50 mL of 0.1 M NaOH is added to 75 mL of 0.1 M NH_4Cl to make a basic buffer. If p K_a of NH_4^+ is 9.26, then the pH of solution...
- The p K_a of HCN is 9.30. The pH of a solution prepared by mixing 2.5 moles of KCN and 2.5 moles of HCN in water and making up...
- A buffer solution is prepared in which the conc. of NH_3 is 0.30 M and the concentration of NH_4^+ is 0.20 M. If the equilibrium...
- One litre of a buffer solution containing 0.01 M NH_4Cl and 0.1 M NH_4OH having p K_b of 5 has pH of
- Which of the following will make basic buffer?
- What will be the molar solubility S of a solid salt with general formula M_x^ p+ X_y^ q- ?
- The solubility product (K_ sp ) of solid barium sulphate at 298 K is 1.1 10^ -10 . The molar solubility, (S) of [ Ba^ 2+ ] and [...
- The K_ sp of Ag_2CrO_4 , AgCl, AgBr and AgI are respectively, 1.1 10^ -12 , 18 10^ -10 , 5.0 10^ -23 , 8.3 10^ -17 . Which one...
- Calculate the molar solubility (S) of a salt like zirconium phosphate of molecular formula ( Zr^ 4+ )_3( PO_4^ 3- )_4.
- Calculate the solubility of A_2X_3 in pure water, assuming that neither kind of ion reacts with water. (Given, the solubility...
- The molar solubility of CaF_2 (K_ sp = 5.3 10^ -11 ) in 0.1 M solution of NaF will be
- The solubility of BaSO_4 in water is 2.42 10^ -3 g ,L^ -1 at 298 K. The value of its solubility product (K_ sp ) will be, (Given,...
- Calculate the volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution. (K_ sp of PbCl_2 = 3.2...
- The solubility product of Cr(OH)_3 at 298 K is 6.0 10^ -31 . The concentration of hydroxide ions in a saturated solution of...
- If the maximum concentration of PbCl_2 in water is 0.01 M at 25 ^ , its maximum concentration in 0.1 M NaCl will be