You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Molecular Speeds - Vrms, Vavg, Vmps

In an experim...

Question

In an experiment of analysis of oxalate salt, a solution of oxalate gives white precipitate with $C a C l_{2}$ solution. This precipitate is dissolved in dilute $H_{2} S O_{4}$ and decolourises $K M n O_{4}$ (acidified) solution as the following reactions:
$N a_{2} C_{2} O_{4} + C a C l_{2} \to C a C_{2} O_{4} ↓ w h i t e + 2 N a C l$
$C a C_{2} O_{4} + H_{2} S O_{4} \to C a S O_{4} + H_{2} C_{2} O_{4}$
$K M n O_{4} + H_{2} S O_{4} + H_{2} C_{2} O_{4} \to M n S O_{4} + K_{2} S O_{4} + H_{2} O + C O_{2}$
If one mole of $N a_{2} C_{2} O_{4}$ is taken and reacted with sufficient amount of other reactants such as to give 100% reaction yield at each step and the liberated $C O_{2}$ is kept in a container of volume V at pressure P, temperature T. Then $U_{r m s}$ of $C O_{2}$ gas in container will be :

\sqrt{\frac{3 P V}{2 M_{C O_{2}}}}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\sqrt{\frac{3 R T}{2 M_{C O_{2}}}}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\sqrt{\frac{3 P V}{M_{C O_{2}}}}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\sqrt{\frac{3 R T}{M_{C O_{2}}}}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct options are
A $\sqrt{\frac{3 P V}{2 M_{C O_{2}}}}$
D $\sqrt{\frac{3 R T}{M_{C O_{2}}}}$
Applying POAC on carbon,
(moles of $N a_{2} C_{2} O_{7}) \times 2 =$ (mole of $C O_{2}) \times 1$
$1 \times 2 = n_{C O_{2}}$
$U_{r m s} = \sqrt{\frac{3 P V}{2 M_{C O_{2}}}}$
or, $U_{r m s} = \sqrt{\frac{3 R T}{M_{C O_{2}}}}$

Suggest Corrections

Similar questions

Hydrogen peroxide solution (

20

mL) reacts quantitatively with a solution of

K M n O_{4}

(

20

mL) acidified with dilute

H_{2} S O_{4}

. The same volume of the

K M n O_{4}

solution is just decolourised by

10

mL of

M n S O_{4}

in neutral medium simultaneously forming a dark brown precipitate of hydrated

M n O_{2}

. The brown precipitate is dissolved in

10

mL of

0.2 M

sodium oxalate under boiling condition in the presence of dilute

H_{2} S O_{4}

Choose the correct balanced equation involved in the reaction.

Q. Hydrogen peroxide solution

(20 m L)

reacts quantitatively with a solution of

K M n O_{4} (20 m L)

acidified with dilute

H_{2} S O_{4}

. The same volume of the

K M n O_{4}

solution is just decolourised by

10 m L

M n S O_{4}

in neutral medium simultaneously forming a dark brown precipitate of hydrated

M n O_{2}

. The brown precipitate is dissolved in

10 m L

0.2 M

sodium oxalate under boiling condition in the presence of dilute

H_{2} S O_{4}

. Write the balanced equations involved in the reactions and calculate the molarity of

H_{2} O_{2}

Q. A

20 mL

solution of hydrogen peroxide reacts quantitatively with a

20 mL

solution of

K M n O_{4}

acidified with dilute

H_{2} S O_{4}

. The same volume of the

K M n O_{4}

solution is decolourised by

10 mL

M n S O_{4}

in neutral medium simultaneously forming a dark brown precipitated of hydrated

M n O_{2}

. The brown precipitate is dissolved in

20 mL

0.2 M

sodium oxalate under boiling condition in the presence of dilute

H_{2} S O_{4}

. Calculate the volume strength of

H_{2} O_{2}

Q. A sodium salt of an organic acid ‘X’ produces effervescence with conc.

H_{2} S O_{4}

. ‘X’ reacts with the acidified aqueous

C a C l_{2}

solution to give a white precipitate which decolourises an acidic solution of

K M n O_{4}

. ‘X’ is:

Q. A colorless salt gives white precipitate with

C a C l_{2}

solution. The salt also decolorizes acidified

M n O_{4}^{-}

with effervescence. On reaction with

H_{2} S O_{4}

, the salt gives a colourless gaseous mixture containing :

Join BYJU'S Learning Program

The correct options are A √3PV2MCO2 D √3RTMCO2Applying POAC on carbon,(moles of Na2C2O7)×2= (mole of CO2)×11×2=nCO2Urms=√3PV2MCO2 or, Urms=√3RTMCO2