Ionic Equilibrium Test 5

Total Questions:50 Total Time: 75 Min

Remaining:

Questions 1 of 50

Question:Which one of the following can be classified as a Bronsted base

$$NO_3^ -$$

$${H_3}{O^ + }$$

$$NH_4^ +$$

$$C{H_3}COOH$$

Questions 2 of 50

Question:A solution of sodium bicarbonate in water turns

Phenolphthalein pink

Methyl orange yellow

Methyl orange red

Blue litmus red

Questions 3 of 50

Question:What name is given to the reaction between hydrogen ion and hydroxyl ion

Hydrogenation

Hydroxylation

Hydrolysis

Neutralization

Questions 4 of 50

Question:Among the following, the weakest Lewis base is

$${H^ - }$$

$$O{H^ - }$$

$$C{l^ - }$$

$$HCO_3^ -$$

Questions 5 of 50

Question:When 100 ml of 1M $$NaOH$$ solution is mixed with 10 ml of 10 M $${H_2}S{O_4},$$ the resulting mixture will be

Acidic

Alkaline

Neutral

Strongly alkaline

Questions 6 of 50

Question:The $$pH$$indicators are

Salts of strong acids and strong bases

Salts of weak acids and weak bases

Either weak acids or weak bases

Either strong acids or strong bases

Questions 7 of 50

Question:Which of the following cannot act as a Lewis or Bronsted acid

$$B{F_3}$$

$$AlC{l_3}$$

$$SnC{l_4}$$

$$CC{l_4}$$

Questions 8 of 50

Question:Which one of the following salts gives an acidic solution in water

$$C{H_3}COONa$$

$$N{H_4}Cl$$

$$NaCl$$

$$C{H_3}COON{H_4}$$

Questions 9 of 50

Question:Which of the following is the weakest base

$$NaOH$$

$$Ca\,{(OH)_2}$$

$$N{H_4}OH$$

$$KOH$$

Questions 10 of 50

Question:The suitable indicator for strong acid and weak base is

Methyl orange

Methyl red

Phenol red

Phenolphthalein

Questions 11 of 50

Question:The aqueous solution of aluminium chloride is acidic due to

Cation hydrolysis

Anion hydrolysis

Hydrolysis of both anion and cation

Dissociation

Questions 12 of 50

Question:$$HSO_4^ -$$ is the conjugate base of

$${H^ + }$$

$${H_2}S{O_3}$$

$$SO_4^{2 - }$$

$${H_2}S{O_4}$$

Questions 13 of 50

Question:Which shows weak ionisation in water

$${H_2}S{O_4}$$

$$NaCl$$

$$HN{O_3}$$

$$N{H_3}$$

Questions 14 of 50

Question:An organic dye, cosine used to detect end point of precipitation titration by adsorption is called

Absorption indicator

Chemical indicator

None of these

Questions 15 of 50

Question:In the process $$BC{l_3} + P{H_3} \to BC{l_3}:P{H_3}$$ The Lewis acid is

$$P{H_3}$$

$$BC{l_3}$$

Both

None

Questions 16 of 50

Question:The conjugate acid of $$N{H_3}$$ is

$$N{H_3}$$

$$NH_4^ +$$

$${N_2}{H_4}$$

$$N{H_2}OH$$

Questions 17 of 50

Question:The solvent which neither accepts proton nor donates proton is called

Amphoteric

Neutral

Aprotic

Amphiprotic

Questions 18 of 50

Question:For the reaction in aqueous solution $$Z{n^{2 + }} + {X^ - }$$$$\leftrightarrow$$ $$Zn{X^ + },$$ the $${K_{eq}}$$ is greatest when $$X$$is

$${F^ - }$$

$$NO_3^ -$$

$$ClO_4^ -$$

$${I^ - }$$

Questions 19 of 50

Question:If the solubility product $${K_{sp}}$$ of a sparingly soluble salt $$M{X_2}$$ at $$25^\circ C$$ is $$1.0 \times {10^{ - 11}}$$, the solubility of the salt in mole litre–1 at this temperature will be

$$2.46 \times {10^{14}}$$

$$1.36 \times {10^{ - 4}}$$

$$2.60 \times {10^{ - 7}}$$

$$1.20 \times {10^{ - 10}}$$

Questions 20 of 50

Question:The unit of ionic product of water $${K_w}$$ are

$$Mo{l^{ - 1}}{L^{ - 1}}$$

$$Mo{l^{ - 2}}{L^{ - 2}}$$

$$Mo{l^{ - 2}}{L^{ - 1}}$$

$$Mo{l^2}{L^{ - 2}}$$

Questions 21 of 50

Question:What is the $$pH$$ value of $$\frac{N}{{1000}}\,KOH$$ solution

$${10^{ - 11}}$$

3

2

11

Questions 22 of 50

Question:Mohr's salt is a

Normal salt

Acid salt

Basic salt

Double salt

Questions 23 of 50

Question:If acetic acid mixed with sodium acetate, then $${H^ + }$$ion concentration will be

Increased

Decreased

Remains unchanged

$$pH$$decreased

Questions 24 of 50

Question:Solubility of $$AgCl$$ will be minimum in

$$0.001\,M\,AgN{O_3}$$

Pure water

$$0.30\,\,M$$

$$0.01\,M\,NaCl$$

Questions 25 of 50

Question:The solubility product of $$A{g_2}Cr{O_4}$$is $$32 \times {10^{ - 12}}$$. What is the concentration of $$CrO_4^ -$$ ions in that solution

$$2 \times {10^{ - 4}}\,m/s$$

$$16 \times {10^{ - 4}}\,m/s$$

$$8 \times {10^{ - 4}}\,m/s$$

$$8 \times {10^{ - 8}}\,m/s$$

Questions 26 of 50

Question:The addition of $$HCl$$ will not suppress the ionization of

Acetic acid

Benzoic acid

$${H_2}S$$

Sulphuric acid

Questions 27 of 50

Question:The solubility of $$CaC{O_3}$$in water is $$3.05 \times {10^{ - 4}}moles/litre.$$ Its solubility product will be

$$3.05 \times {10^{ - 4}}$$

10

$$6.1 \times {10^{ - 4}}$$

$$9.3 \times {10^{ - 8}}$$

Questions 28 of 50

Question:Solubility of $$Ba{F_2}$$ in a solution $$Ba{(N{O_3})_2}$$ will be represents by the concentration term

$$[B{a^{ + + }}]$$

$$[{F^ - }]$$

$$\frac{1}{2}[{F^ - }]$$

$$2\,[NO_3^ - ]$$

Questions 29 of 50

Question:The solubility product of $$BaS{O_4}$$ is $$1.3 \times {10^{ - 9}}$$. The solubility of this salt in pure water will be

$$1.69 \times {10^{ - 9}}mol\,litr{e^{ - 1}}$$

$$1.69 \times {10^{ - 18}}mol\,litr{e^{ - 1}}$$

$$3.6 \times {10^{ - 18}}mol\,litr{e^{ - 1}}$$

$$3.6 \times {10^{ - 5}}mol\,litr{e^{ - 1}}$$

Questions 30 of 50

Question:The solubility product of $$AgCl$$ under standard conditions of temperature is given by

$$1.6 \times {10^{ - 5}}$$

$$1.5 \times {10^{ - 8}}$$

$$3.2 \times {10^{ - 10}}$$

$$1.5 \times {10^{ - 10}}$$

Questions 31 of 50

Question:Which one of the following salt is most acidic in water

$$NiC{l_2}$$

$$BeC{l_2}$$

$$FeC{l_3}$$

$$AlC{l_3}$$

Questions 32 of 50

Question:Which of the following aqueous solution will have a $$pH$$ less than 7.0

$$KN{O_3}$$

$$NaOH$$

$$FeC{l_3}$$

$$1 \times {10^{ - 15}}$$

Questions 33 of 50

Question:Which of the following is non-electrolyte

$$NaCl$$

$$CaC{l_2}$$

$${C_{12}}{H_{22}}{O_{11}}$$

$$C{H_3}COOH$$

Questions 34 of 50

Question:Ammonium hydroxide is a

Strong electrolyte

Weak electrolyte

Both under different conditions

Non-electrolyte

Questions 35 of 50

Question:For a weak acid $$HA,$$ Ostwald's dilution law is represented by the equation

$${K_a} = \frac{{\alpha c}}{{1 - {\alpha ^2}}}$$

$${K_a} = \frac{{{\alpha ^2}c}}{{1 - \alpha }}$$

$$\alpha = \frac{{{K_a}c}}{{1 - c}}$$

$${K_a} = \frac{{{\alpha ^2}c}}{{1 - {\alpha ^2}}}$$

Questions 36 of 50

Question:Acetic acid is a weak electrolyte because

Its molecular weight is high

It is covalent compound

It does not dissociate much or its ionization is very less

It is highly unstable

Questions 37 of 50

Question:Ionisation depends upon

Pressure

Volume

Dilution

None of these

Questions 38 of 50

Question:Which is a buffer solution

$$C{H_3}COOH + C{H_3}COONa$$

$$C{H_3}COOH + C{H_3}COON{H_4}$$

$$C{H_3}COOH + N{H_4}Cl$$

$$NaOH + NaCl$$

Questions 39 of 50

Question:For preparing a buffer solution of $$pH$$6 by mixing sodium acetate and acetic acid, the ratio of the concentration of salt and acid should be$$({K_a} = {10^{ - 5}})$$

$$1\,\,:\,\,10$$

$$10\,\,:\,\,1$$

$$100\,\,:\,\,1$$

$$1\,\,:\,\,100$$

Questions 40 of 50

Question:The hydrogen ion concentration of $$0.1\,N$$ solution of $$C{H_3}COOH,$$ which is 30% dissociated, is

0.03

3

0.3

30

Questions 41 of 50

Question:A sample of $$N{a_2}C{O_3}.{H_2}O$$ weighing $$0.62\,\,g$$is added to $$100\,\,ml$$ of $$0.1\,N\;\;{(N{H_4})_2}S{O_4}$$ solution. What will be the resulting solution

Acidic

Neutral

Basic

None of these

Questions 42 of 50

Question:$$50\,\,ml$$ water is added to a $$50\,\,ml$$ solution of $$Ba{(OH)_2}$$ of strength $$0.01\,\,M.$$ The $$pH$$ value of the resulting solution will be

8

10

12

6

Questions 43 of 50

Question:Which oxychloride has maximum $$pH$$

$$NaClO$$

$$NaCl{O_2}$$

$$NaCl{O_3}$$

$$NaCl{O_4}$$

Questions 44 of 50

Question:If 4.0 gm $$NaOH$$ is present in 1 litre solution, then its $$pH$$ will be

6

13

18

24

Questions 45 of 50

Question:When the $$pH$$of a solution is 2, the hydrogen ion concentration in moles per litre is

$$1 \times {10^{ - 14}}$$

$$1 \times {10^{ - 2}}$$

$$1 \times {10^{ - 7}}$$

$$pH$$

Questions 46 of 50

Question:The $$pH$$of a solution is the negative logarithm to the base 10 of its hydrogen ion concentration in

Moles per litre

Millimoles per litre

Micromoles per litre

Nanomoles per litre

Questions 47 of 50

Question:$$pH$$ of $$NaCl$$solution is

7

Zero

$$> 7$$

$$< 7$$

Questions 48 of 50

Question:The one which has the highest value of $$pH$$is

Distilled water

$$N{H_3}$$solution in water

$$N{H_3}$$

Water saturated with $$C{l_2}$$

Questions 49 of 50

Question:$$pH$$scale was introduced by

Arrhenius

Sorensen

Lewis

Lowry

Questions 50 of 50

Question:The $$pH$$of an aqueous solution having hydroxide ion concentration as $$1 \times {10^{ - 5}}$$ is