Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 24

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Which of the following compound forms an aqueous solution which is acidic when compared with water

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Important Questions on Equilibrium

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 25

Which of the following solutions cannot act as a buffer?

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 26

Which of the following will produce a buffer solution when mixed in equal volumes?

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 27

A solution contain equal moles of

{CH}_{3} COOH

and

{CH}_{3}

COONa. The

pH

will change significantly if:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 28

K_{a}

for

HCN

is

5 \times 10^{- 10} .

For maintaining a constant

pH

of

9,

the volume of

5 M KCN

solution required to be added to

10 mL

of

2 M HCN

solution is:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 29

50 mL

of

2 M

acetic acid mixed with

10 mL

1 M

sodium acetate solution will have an approximate

pH

of:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 30

Which of the following solutions has minimum buffer capacity?

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 2>Q 31

The amount of sodium hydrogen carbonate, ${NaHCO}_{3}$ , in an antacid tablet is to be determined by dissolving the tablet in water and then titrating the resulting solution with hydrochloric acid. Which indicator is the most appropriate for this titration?

$\begin{array}{lc} Acid & K_{a} \\ H_{2} {CO}_{3} & 2.5 \times 10^{-} \\ {HCO}_{3} & 2.4 \times 10^{- 8} \end{array}$