26.Which of the following mixtures can act as a buffer ?
A) NaOH+HCOONa(1:1" molar ratio)
B) "HCOOH+NaOH(2:1" molar ratio)
C) `NH_(4)Cl`+NaOH(2:1" molar ratio )
D) HCOOH+NaOH(1:1" molar ratio)

Which of the following combinations of solute would result in the formation of a buffer solution. a. CH_(3)COOH +NaOH in i. 1:1 mol ratio ii. 2:1 mol ratio iii. 1:2 mol ratio b. NH_(4)CI=NH_(3) in i. 1:1 mol ratio ii. 2:1 mol ratio iii. 1:2 mol ratio c. HCI +NaCI d. HCI +CH_(3)COOH e. NaH +HCI

In which case racemic mixture is obtained on mixing its mirror images in 1:1 molar ratio ?

In which case racemic mixture is obtained on mixing its mirror images (d & l form) is 1:1 molar ratio:

Calculate the number of moles of Cu and HNO_(3) to give NO and NO_(2) in the (2:1) molar ratio.

4 g of NaOH are present in 0.1 dm^(3) solution have (a) mole fraction of NaOH , (b) molality of NaOH solution, (c ) molarity of NaOH solution, (d) normality of NaOH solution.

What indicators will be suitable for the following acid-base titrations: a. HCOOH against NaOH b. HBr against KOH c. NH_(4)OH with HNO_(3)

What is the molarity of NaOH solution if 250 mL of it contains 1 mg of NaOH ?