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

Answers Choices:

\(NO_3^ - \)

\({H_3}{O^ + }\)

\(NH_4^ + \)

\(C{H_3}COOH\)

Questions 2 of 50

Question:A solution of sodium bicarbonate in water turns

Answers Choices:

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

Answers Choices:

Hydrogenation

Hydroxylation

Hydrolysis

Neutralization

Questions 4 of 50

Question:Among the following, the weakest Lewis base is

Answers Choices:

\({H^ - }\)

\(O{H^ - }\)

\(C{l^ - }\)

\(HCO_3^ - \)

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

Answers Choices:

Acidic

Alkaline

Neutral

Strongly alkaline

Questions 6 of 50

Question:The \(pH\)indicators are

Answers Choices:

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

Answers Choices:

\(B{F_3}\)

\(AlC{l_3}\)

\(SnC{l_4}\)

\(CC{l_4}\)

Questions 8 of 50

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

Answers Choices:

\(C{H_3}COONa\)

\(N{H_4}Cl\)

\(NaCl\)

\(C{H_3}COON{H_4}\)

Questions 9 of 50

Question:Which of the following is the weakest base

Answers Choices:

\(NaOH\)

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

\(N{H_4}OH\)

\(KOH\)

Questions 10 of 50

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

Answers Choices:

Methyl orange

Methyl red

Phenol red

Phenolphthalein

Questions 11 of 50

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

Answers Choices:

Cation hydrolysis

Anion hydrolysis

Hydrolysis of both anion and cation

Dissociation

Questions 12 of 50

Question:\(HSO_4^ - \) is the conjugate base of

Answers Choices:

\({H^ + }\)

\({H_2}S{O_3}\)

\(SO_4^{2 - }\)

\({H_2}S{O_4}\)

Questions 13 of 50

Question:Which shows weak ionisation in water

Answers Choices:

\({H_2}S{O_4}\)

\(NaCl\)

\(HN{O_3}\)

\(N{H_3}\)

Questions 14 of 50

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

Answers Choices:

Absorption indicator

Adsorption 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

Answers Choices:

\(P{H_3}\)

\(BC{l_3}\)

Both

None

Questions 16 of 50

Question:The conjugate acid of \(N{H_3}\) is

Answers Choices:

\(N{H_3}\)

\(NH_4^ + \)

\({N_2}{H_4}\)

\(N{H_2}OH\)

Questions 17 of 50

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

Answers Choices:

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

Answers Choices:

\({F^ - }\)

\(NO_3^ - \)

\(ClO_4^ - \)

\({I^ - }\)

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

Answers Choices:

\(2.46 \times {10^{14}}\)

\(1.36 \times {10^{ - 4}}\)

\(2.60 \times {10^{ - 7}}\)

\(1.20 \times {10^{ - 10}}\)

Questions 20 of 50

Question:The unit of ionic product of water \({K_w}\) are

Answers Choices:

\(Mo{l^{ - 1}}{L^{ - 1}}\)

\(Mo{l^{ - 2}}{L^{ - 2}}\)

\(Mo{l^{ - 2}}{L^{ - 1}}\)

\(Mo{l^2}{L^{ - 2}}\)

Questions 21 of 50

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

Answers Choices:

\({10^{ - 11}}\)

3

2

11

Questions 22 of 50

Question:Mohr's salt is a

Answers Choices:

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

Answers Choices:

Increased

Decreased

Remains unchanged

\(pH\)decreased

Questions 24 of 50

Question:Solubility of \(AgCl\) will be minimum in

Answers Choices:

\(0.001\,M\,AgN{O_3}\)

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

Answers Choices:

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

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

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

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

Questions 26 of 50

Question:The addition of \(HCl\) will not suppress the ionization of

Answers Choices:

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

Answers Choices:

\(3.05 \times {10^{ - 4}}\)

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

Answers Choices:

\([B{a^{ + + }}]\)

\([{F^ - }]\)

\(\frac{1}{2}[{F^ - }]\)

\(2\,[NO_3^ - ]\)

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

Answers Choices:

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

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

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

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

Questions 30 of 50

Question:The solubility product of \(AgCl\) under standard conditions of temperature is given by

Answers Choices:

\(1.6 \times {10^{ - 5}}\)

\(1.5 \times {10^{ - 8}}\)

\(3.2 \times {10^{ - 10}}\)

\(1.5 \times {10^{ - 10}}\)

Questions 31 of 50

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

Answers Choices:

\(NiC{l_2}\)

\(BeC{l_2}\)

\(FeC{l_3}\)

\(AlC{l_3}\)

Questions 32 of 50

Question:Which of the following aqueous solution will have a \(pH\) less than 7.0

Answers Choices:

\(KN{O_3}\)

\(NaOH\)

\(FeC{l_3}\)

\(1 \times {10^{ - 15}}\)

Questions 33 of 50

Question:Which of the following is non-electrolyte

Answers Choices:

\(NaCl\)

\(CaC{l_2}\)

\({C_{12}}{H_{22}}{O_{11}}\)

\(C{H_3}COOH\)

Questions 34 of 50

Question:Ammonium hydroxide is a

Answers Choices:

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

Answers Choices:

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

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

\(\alpha = \frac{{{K_a}c}}{{1 - c}}\)

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

Questions 36 of 50

Question:Acetic acid is a weak electrolyte because

Answers Choices:

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

Answers Choices:

Pressure

Volume

Dilution

None of these

Questions 38 of 50

Question:Which is a buffer solution

Answers Choices:

\(C{H_3}COOH + C{H_3}COONa\)

\(C{H_3}COOH + C{H_3}COON{H_4}\)

\(C{H_3}COOH + N{H_4}Cl\)

\(NaOH + NaCl\)

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\(({K_a} = {10^{ - 5}})\)

Answers Choices:

\(1\,\,:\,\,10\)

\(10\,\,:\,\,1\)

\(100\,\,:\,\,1\)

\(1\,\,:\,\,100\)

Questions 40 of 50

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

Answers Choices:

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

Answers Choices:

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

Answers Choices:

8

10

12

6

Questions 43 of 50

Question:Which oxychloride has maximum \(pH\)

Answers Choices:

\(NaClO\)

\(NaCl{O_2}\)

\(NaCl{O_3}\)

\(NaCl{O_4}\)

Questions 44 of 50

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

Answers Choices:

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

Answers Choices:

\(1 \times {10^{ - 14}}\)

\(1 \times {10^{ - 2}}\)

\(1 \times {10^{ - 7}}\)

\(pH\)

Questions 46 of 50

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

Answers Choices:

Moles per litre

Millimoles per litre

Micromoles per litre

Nanomoles per litre

Questions 47 of 50

Question:\(pH\) of \(NaCl\)solution is

Answers Choices:

7

Zero

\( > 7\)

\( < 7\)

Questions 48 of 50

Question:The one which has the highest value of \(pH\)is

Answers Choices:

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

Answers Choices:

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

Answers Choices:

5

9

4.5

11