Karnataka Board PUCPUC Science 2nd PUC Class 12

Nacl is Heated with Sulphuric Acid in the Presence of MnO2 - Chemistry


Write balanced equations for NaCl is heated with sulphuric acid in the presence of MnO2




`4NaCl + MnO_2 + 4H_2SO_4 -> MnCl_2 + 4NaHSO_4 + 2H_2O + Cl_2`

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Chapter 7: The p-block Elements - Exercises [Page 208]


NCERT Chemistry Class 12
Chapter 7 The p-block Elements
Exercises | Q 32.1 | Page 208


What is molecular formula of oleum?

(a) H2SO3

(b) H2SO4

(c) H2S2O7

(d) H2S2O8

Write the conditions to maximize the yield of H2SO4 by contact process.

Complete the following equations: CaF2+H2SO4 

Complete the following equations: C + conc. H2SO4

Draw the structures of the following: H2SO4

Mention three areas in which H2SO4 plays an important role.

Why is `K_(a_2) "<<" K_(a_1)` for `H_2SO_4` in water?

Describe the manufacture of H2SO4 by contact process?

What is the action of concentrated sulphuric acid on phosphorous pentachloride

What happens when dilute sulphuric acid is treated with Fe

What happens when dilute sulphuric acid is treated with CaF2

What is the action of concentrated sulphuric acid on copper

What is the action of concentrated sulphuric acid on potassium chlorate?

Give balanced chemical equations for Sulphuric acid is treated with hydrogen sulphide

Write chemical reactions for different steps in the manufacture of sulphuric acid by lead chamber process. Draw the structure of phosphorous pentachloride

 Complete and balance the following equations: 
S+H2SO4(conc.)  → 

Write a balanced chemical equation for the following reaction:

Sulphuric acid is treated with phosphorous.

Write structure and molecular formula for the following compounds:
a. Orthophosphoric acid 
b. Sulphurous acid

Write the formula for pentaamminechlorocobalt (III) sulphate. 

Answer the following.

Write the reaction of conc. H2SO4 with sugar.

Which of the following reaction is NOT involved in contact process used for manufacturing sulfuric acid?

Identify the INCORRECT statement about H2SO4.

Identify the products formed when conc. sulfuric acid reacts with calcium fluoride.

Gas 'X' is prepared by treating sodium sulfite with dilute sulfuric acid. When gas 'X' is oxidised by dioxygen in presence of vanadium (V) oxide, gas 'Y' is formed. Identify X and Y.

The molecular formula of oleum is ____________.

The sulfuric acid obtained by contact process is ____________ % pure.

Which among the following catalysts is used in manufacture of sulphuric acid by contact process?

What is the ratio of volumes of gases involved in the preparation of sulphur trioxide from sulphur dioxide and dioxygen respectively under similar conditions of temperature and pressure?

In the manufacture of sulphuric acid by contact process Tyndall box is used to ____________.

Hot conc. \[\ce{H2SO4}\] acts as the moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following element is oxidised by conc. \[\ce{H2SO4}\] into two gaseous products?

Which of the following statements are correct?

(i) S – S bond is present in \[\ce{H2S2O6}\].

(ii) In peroxosulphuric acid \[\ce{(H2SO5)}\] sulphur is in +6 oxidation state.

(iii) Iron powder along with \[\ce{Al2O3}\] and \[\ce{K2O}\] is used as a catalyst in the preparation of \[\ce{NH3}\] by Haber’s process.

(iv) Change in enthalpy is positive for the preparation of \[\ce{SO3}\] by catalytic oxidation of \[\ce{SO2}\].

The oxidation number of sulphur in Na2S4O6 is:-

The number of dative bonds in sulphric acid molecule is ______.

What is the catalyst used for the oxidation of SO2 to SO3 in the lead chamber process for the manufacture of sulphuric acid?


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