What is the pH of a saturated solution of Cu(OH)_(2) ? (K_(sp)=2.6xx10^(-19)
H_(3)A is a weak triprotic acid (K_(a1)=10^(-5),K_(a2)=10^(-9),K_(a3)=10^(-13) What is the value of pH of 0.1 M H_(3)A (aq.) solution ? Where pX=-log X and X= [[A^(3-)]]/[[HA^(2-)]]
H_(2) A is a weak diprotic acid. If the pH of 0.1 M H_(2)A solution is 3 and concentration of A^(2-) is 10^(-12) at 25^(@)C. Select correct statement (s)
What is the concentration of CH_(3)COOH(aq.) in a solution prepared by dissolving 0.01 mole of NH_(4)^(+)CH_(3)COO^(-) in 1 L H_(2)O ? [K_(a(CH_(3)COOH))=1.8xx10^(-5)),K_(b(NH_(4)OH)=1.8xx10^(-5))]
What is the pH of a solution in which 10.0 mL of 0.010 M Sr(OH)_(2) is added to 10.0 mL of 0.010 M HCl?
Chose the correct code {:(,"Column"-I , "Column"-II,), ((P), pK_(b) "of" X^(-) (K_(a) "of" HX = 10^(-6)), (1), 6.9), ((Q), pH of 10^(-8) M HCl, (2),8), ((R), pH of 10^(-2) "M acetic and acid solution" (Take K_(a) of acetic acid=1.6xx10^(-5)), (3), 10.7), ((S), "pOH of a solution obtained by mixing equal volumes of solution with pH 3 and 5"., (4),3.4):}
What is the oxidation number of S in H_(2)S and C in C_(6)H_(12)O_(6) .
The freezing point of a solution of 2.40 g of biphenyl( C_(12)H_(10) ) in 75.0 g of benzene ( C_(6)H_(6) ) is 4.40^(@)C . The normal freezing point of benzene is 5.50^(@)C . What is the molal freezing point constant (^(@)C//m) for benzene ?
Size of nucleus was obtained by the equation r=R_(0)A^(1//3) , Where r is the radius of nucleus of mass no A. and R_(0) is a constant whose valie is equal to 1.5xx10^(-15) metre. (Given : 1 amu = 1.66xx10^(-24)g ) Nucleus radius of ._(6)C^(12) is 3xx10^(-15) metre. What is density ratio of d_(c)//d_(H_(2)O) ? a) 1.76xx10^(17) b) 1.76xx10^(14) c) 17.6xx10^(7) d) 17.6xx10^(17)
Calculate the pH of 0.2 M CH_3 COOH (K_a = 1.5 xx 10^-5) .
NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Assertin-Reason Type Questions
