Statement-1: pH value of acidic buffer solution changes , If buffer solution is diluted upto very large extent. Statement-2: `[H^(+)]` decreases due to change in concentration as well as `alpha` increases and decreases in concentration is more as compared to increases in `alpha` .
A
If both the statements are TRUE and STATEMENT-2 is the correct explation of STATEMENT-1
B
If both the statements are TRUE AND STATEMENT-2 is NOT the correct explanation of STATEMENT-1
The following are some statements about adsorption of solutes from the solutions. A) Increase in the surface area of the adsorbent increases the extent of adsorption. B) Increase in temperature decreases the extent of adsorption. C) The extent of adsorption (x/m) is related to the molar concentration of solution ( c) is given by x//m = k.c^(1//n) The correct combination is
When 0.1 mole of an acid is added to 2 lit of a buffer solution, the P^(H) of the buffer decreases by 0.5 The buffer capacity of the solution is
In an acidic buffer solution (pH = 4.4) , the concentration ratio of acid and salt is 2 :1 . The value of dissociation constant of weak acid may be
The pH of a buffer solution is 4.745 . When 0.044 mole of Ba(OH)_(2) is added to 1 lit. of the buffer , the pH changes to 4.756 . Then the buffer capacity is
If the pH values of solutions X, Y and Z are 13, 6 and 2 respectively then does the pH value of a solution increase or decrease when a base is added to it '? Why?
D(+) Glucose has melting point 140^(@)C and specific rotation [a]_(D)^(25) is 112^(@)C . Another D(+) Glucose has melting point 150^(@)C and specific rotation [a]_(D)^(25) is +18.7^(@)C . The two form have significantly different optical rotation but when an aqueous solution of either form is allowed to stand, it rotation changes. The specific rotation of one form decreases and rotation of other increases until both solution show the same value +52.7^(@) . The change in rotation towards an equilibrium value is called mutarotation [alpha]_(D)^(25) = +18.7^(@)C " " [alpha]_(D)^(25) = +112^(@)C Mutarotation is characteristic feature of
D(+) Glucose has melting point 140^(@)C and specific rotation [a]_(D)^(25) is 112^(@)C . Another D(+) Glucose has melting point 150^(@)C and specific rotation [a]_(D)^(25) is +18.7^(@)C . The two form have significantly different optical rotation but when an aqueous solution of either form is allowed to stand, it rotation changes. The specific rotation of one form decreases and rotation of other increases until both solution show the same value +52.7^(@) . The change in rotation towards an equilibrium value is called mutarotation [alpha]_(D)^(25) = +18.7^(@)C " " [alpha]_(D)^(25) = +112^(@)C What percentage of beta-D-(+) glucopyranose found at equilibrium in the aqueous solution?
NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Assertin-Reason Type Questions
