Ch 8 વાતાવરણ ભાગ 1 | ધોરણ 11 આર્ટસ ભૂગોળ | std 11 arts bhugol -ch 8 vatavaran | sarthi support

In decinormal solution, CH_(3)COOH acid is ionised to the extent of 1.3% . If log 1.3 = 0.11, what is the pH of the solution?

ABC is a triangle and AD is the median. If the coordinates of A are (4,7,-8) and the coordinates of centroid of triangle ABC are (1,1,1) what are the coordinates of D? (A) ((-1)/2,2,11) (B) ((-1)/2,-2,11/2) (C) (-1,2,11) (D) (-5,-11,19)

If R is a relation from set A={11 , 12 , 13} to set B={8, 10 , 12} defined by y=x-3, then write R^(-1)dot A. {(8,11),(10,13)} B. {(8,11),(10,12)} C. {(10,13),(10,11)} D. none of these ANSWER: A

Two equal volume flasks cotaining equal masses of H_(2) and CH_(4) are at 100 K and 200 K , repectively. The molecular diameter of CH_(4) is twice that of H_(2) . ( i ) Which of the following statement about Z_(1) (number of collisions per molecule per cm^(3) per second) is true? ( a ) Z_(11) of H_(2)=2Z_(1) of CH_(4) ( b ) Z_(11) of H_(2)=4Z_(1) of CH_(4) ( c ) Z_(11) of H_(2)=Z_(1) of CH_(4) ( d ) Z_(11) of H_(2)=8Z_(1) of CH_(4) ( ii ) Which of the following statement about Z_(11) (number of bimolecular collisions per cm^(3) per second) is true? ( a ) Z_(1) of H_(2)=4Z_(11) of CH_(4) ( b ) Z_(11) of H_(2)=8Z_(11) of CH_(4) ( c ) Z_(1) of H_(2)=16Z_(11) of CH_(4) ( d ) Z_(1) of H_(2)=32Z_(11) of CH_(4)

A solutions is 10 M in CH_(3)COONa and 1 M in CH_(3)COOH . If pK_(a) of CH_(3)COOH is 4.8 , what is the pH of the solution?

A solution is 10 M in CH_(3)COONa and 1 M in CH_(3)COOH . If pK_(a) of CH_(3)COOH is 4.8 , what is the pH of the solution?

A solution is 1M in CH_(3)COONa . and 0.1M in CH_(3)COOH . if pK_(a) of CH_(3)COOH is 4.8 , what is the pH of the solution?

Both conc. Being 1 M, the factor by which the percent hydrolysis of CH_3COO^- is greater in CH_3COONH_4 than in CH_3COONa is : [K_a(CH_3COOH)=K_b(NH_4OH)=1.8xx10^(-5)]