A very thin copper plate is electro-plated with gold using gold chloride in HCl.

Question

ALOK_RAJ Asked Nov 22, 2023

86 views

1 Answer

RELATED DOUBTS

Aayush Asked Jan 4

67 views

For the cell prepared from electrode A and B, electrode $A : \frac{ Cr _{2} O _{7}^{2-}}{ Cr ^{3+}}, E _{\text {red. }}^{0}=+1.33 V$ and electrode $B$ : $\frac{F_{e^{3+}}^{F e^{2+}}, E_{\text {red. }}^{0}}{}=0.77 V$, which of the following statement is not correct?

Aayush Asked Jan 4

by Aayush

1 Answer

0 Votes

67 Views

ALOK_RAJ Asked Oct 18, 2023

73 views

You are given the following cell at 298K, $Zn \left| Zn^{++} _{( aq .)}\right|| HCl ( aq .)|\left| H _{2}( g )\right| Pt$ with $E _{\text {cell }}=0.701 V$ and $E _{ Zn ^{2+} / Zn }^{0}=-0.76 V$.

ALOK_RAJ Asked Oct 18, 2023

by ALOK_RAJ

1 Answer

0 Votes

73 Views

Aayush Asked Jan 3

86 views

The solubility of $\left[ Co \left( NH _{3}\right)_{4} Cl _{2}\right] ClO _{4}$ ____________, if the $\lambda_{ Co \left( NH _{3}\right)_{4} Cl _{2}^{+}}=50, \lambda_{ ClO _{4}{ }^{-}}=70$ and the measured resistance was $33.5 \Omega$ in a cell with cell constant of $0.20$ is ____________

Aayush Asked Jan 3

by Aayush

1 Answer

0 Votes

86 Views

ALOK_RAJ Asked Nov 22, 2023

84 views

The reduction potential of hydrogen half cell will be negative if (T=298 K) :

ALOK_RAJ Asked Nov 22, 2023

by ALOK_RAJ

1 Answer

0 Votes

84 Views

Aayush Asked Jan 3

76 views

The specific conductivity of an aqueous solution of a weak monoprotic acid is $0.00033$ ohm $^{-1} cm ^{-1}$ at a concentration $0.02 M$.

Aayush Asked Jan 3

by Aayush

1 Answer

0 Votes

76 Views

Aayush Asked Jan 3

32 views

We have taken a saturated solution of $AgBr$. $K _{ sp }$ of $AgBr$ is $12 \times 10^{-14}$.

Aayush Asked Jan 3

by Aayush

1 Answer

0 Votes

32 Views

ALOK_RAJ Asked Oct 18, 2023

194 views

A resistance of $50 \Omega$ is registered when two electrodes are suspended into a beaker containing a dilute solution of a strong electrolyte such that exactly half of the them are submerged into solution.

ALOK_RAJ Asked Oct 18, 2023

by ALOK_RAJ

1 Answer

0 Votes

194 Views

ALOK_RAJ Asked Nov 28, 2023

69 views

When chlorine water is added to an aqueous solution of potassium halide in presence of chloroform, a violet colour is obtained.

ALOK_RAJ Asked Nov 28, 2023

by ALOK_RAJ

1 Answer

1 Vote

69 Views

ALOK_RAJ Asked Aug 3, 2023

137 views

When a teaspoon of solid sugar is dissolved in a glass of liquid water, what phase or phases are present after mixing?

ALOK_RAJ Asked Aug 3, 2023

by ALOK_RAJ

1 Answer

1 Vote

137 Views

Aayush Asked Jan 4

39 views

Acetic acid has $K _{ a }=1.8 \times 10^{-5}$ while formic acid has $K _{ a }=2.1 \times 10^{-4}$.

Aayush Asked Jan 4

by Aayush

1 Answer

0 Votes

39 Views

Aayush Asked Jan 4

42 views

At what $\frac{\left[ Br ^{-}\right]}{\sqrt{\left[ CO _{3}^{2-}\right]}}$ does the following cell have its reaction at equilibrium?

Aayush Asked Jan 4

by Aayush

1 Answer

0 Votes

42 Views

ALOK_RAJ Asked Nov 28, 2023

198 views

Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn blue?

ALOK_RAJ Asked Nov 28, 2023

by ALOK_RAJ

1 Answer

1 Vote

198 Views

Aayush Asked Jan 4

61 views

A current of 0.1 A was passed for 4 hrs. through a solution of cuprocyanide and 0.3745g of copper was deposited on the cathode. Calculate the current efficiency for the copper deposition. (Cu GAM 63.5 or Cu -63.5).

Aayush Asked Jan 4

by Aayush

1 Answer

0 Votes

61 Views

ALOK_RAJ Asked Apr 24, 2022

181 views

A student made the following observations in the laboratory:

ALOK_RAJ Asked Apr 24, 2022

by ALOK_RAJ

1 Answer

4 Votes

181 Views

Aayush Asked Feb 2

60 views

What weight of barium chloride will react with 2.36 g of sodium sulphate in solution so as to produce 3.88 g of barium sulphate and 1.94 g of sodium chloride in solution?

Aayush Asked Feb 2

by Aayush

1 Answer

0 Votes

60 Views

ALOK_RAJ Asked May 7, 2022

139 views

In which one of the following pairs the radius of the second species is greater than that of the first?

ALOK_RAJ Asked May 7, 2022

by ALOK_RAJ

1 Answer

1 Vote

139 Views

ALOK_RAJ Asked Nov 19, 2023

69 views

A molecule is the smaller particle of an element or a compound which has an _________.

ALOK_RAJ Asked Nov 19, 2023

by ALOK_RAJ

1 Answer

0 Votes

69 Views

Aayush Asked Jan 3

37 views

Find $E ^{0}$ for the following reaction : $MnO _{4}^{-}+4 H ^{+}+3 e ^{-} \longrightarrow MnO _{2}+2 H _{2} O$

Aayush Asked Jan 3

by Aayush

1 Answer

0 Votes

37 Views

Chandan Asked Oct 6, 2023

81 views

Cu-63 isotope is 69.09% and Cu-65, 30.91% in a copper atom. If the mass of ${ }^{63} Cu$ isotope is 62.9298 amu, what must be the mass of ${ }^{63} Cu$ isotope given that atomic mass of copper is 63.546 amu?

Chandan Asked Oct 6, 2023

by Chandan

1 Answer

0 Votes

81 Views

Chandan Asked Sep 15, 2023

95 views

The coagulation of 10 mL of a colloidal sol of gold is completely prevented by addition of 0.25 g of a substance X to it before adding 1 mL of 10% NaCl solution. The gold number of X is

Chandan Asked Sep 15, 2023

by Chandan

1 Answer

0 Votes

95 Views

Chandan Asked Sep 29, 2023

123 views

1.878g of a metal bromide when heated in a stream of hydrogen chloride gas is completely converted to the chloride weighing 1.00g.

Chandan Asked Sep 29, 2023

by Chandan

1 Answer

0 Votes

123 Views

Chandan Asked Oct 6, 2023

259 views

It was found that 100g of silver combined with all the chlorine in 56.0g of arsenious chloride.

Chandan Asked Oct 6, 2023

by Chandan

1 Answer

0 Votes

259 Views

ALOK_RAJ Asked Nov 18, 2023

84 views

Sulphur burns in oxygen to form Sulphur dioxide. The properties of Sulphur dioxide are _____

ALOK_RAJ Asked Nov 18, 2023

by ALOK_RAJ

1 Answer

0 Votes

84 Views

Chandan Asked Sep 22, 2023

253 views

0.218 g of magnesium when dissolved in dilute HCl evolved 218.2 mL of hydrogen at $17^{\circ} C$ and 754.5 mm collected over water.

Chandan Asked Sep 22, 2023

by Chandan

1 Answer

0 Votes

253 Views

Aayush Asked Jan 4

37 views

With t taken in seconds and I taken in Amp, the variation of I follows the equation $t^{2}+I^{2}=25$ what amount of Ag will be electrodeposited with this current flowing in the interval 0-5 second? (Ag GAM or Ag =108)

Aayush Asked Jan 4

by Aayush

1 Answer

0 Votes

37 Views

Aayush Asked Apr 7

27 views

Which of the following is not correct regarding gases?

Aayush Asked Apr 7

by Aayush

1 Answer

0 Votes

27 Views

ALOK_RAJ Asked Nov 28, 2023

63 views

Of the following statements about enzymes which is/are true?

ALOK_RAJ Asked Nov 28, 2023

by ALOK_RAJ

1 Answer

1 Vote

63 Views

ALOK_RAJ Asked Nov 22, 2023

74 views

Avogadro number is the :

ALOK_RAJ Asked Nov 22, 2023

by ALOK_RAJ

1 Answer

0 Votes

74 Views

ALOK_RAJ Asked Nov 19, 2023

73 views

An atom is the smallest particle of an element which many or may not have an ______.

ALOK_RAJ Asked Nov 19, 2023

by ALOK_RAJ

1 Answer

0 Votes

73 Views

ALOK_RAJ Asked Aug 3, 2023

79 views

The substance having the maximum tendency to flow is

ALOK_RAJ Asked Aug 3, 2023

by ALOK_RAJ

1 Answer

0 Votes

79 Views

ALOK_RAJ Asked May 7, 2022

176 views

Most efficient overlapping is

ALOK_RAJ Asked May 7, 2022

by ALOK_RAJ

1 Answer

1 Vote

176 Views

Chandan Asked Oct 6, 2023

86 views

Cu2S and Ag2S are isomorphous compounds. The percentage of sulphur in Cu2S is 20.14 and that in Ag2S is 12.94. The atomic weight of copper is 63.57. Calculate the atomic weight of silver.

Chandan Asked Oct 6, 2023

by Chandan

1 Answer

0 Votes

86 Views

Chandan Asked Oct 6, 2023

172 views

The chloride of a metal M is to contain 20.2% metal. The specific heat of the metal is 0.224.

Chandan Asked Oct 6, 2023

by Chandan

1 Answer

0 Votes

172 Views

Chandan Asked Sep 29, 2023

231 views

The vapour density of a chloride of a metal is 81.5 (H=1) and the chloride contains 34.46 % metal. The specific heat of the metal is 0.115. Calculate the exact atomic weight and molecular formula of chloride.

Chandan Asked Sep 29, 2023

by Chandan

1 Answer

0 Votes

231 Views

ALOK_RAJ Asked Dec 1, 2023

63 views

Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below.

ALOK_RAJ Asked Dec 1, 2023

by ALOK_RAJ

1 Answer

1 Vote

63 Views

ASK DOUBTS

A very thin copper plate is electro-plated with gold using gold chloride in HCl.

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 Comments

Please log in or register to add a comment.

RELATED DOUBTS

CATEGORIES

POPULAR TAGS