What happens when (Given balanced equation): Nitric acid is added… - Vidyadip

Question

What happens when (Given balanced equation):
Nitric acid is added to Kl (aq)?

✓

Answer

Nitric acid act as oxidizing agent and oxidizes iodide to iodine.
$
HNO _3+ H _2 O \longrightarrow H _3 O ^{+}+ NO _3^{-}
$
$
KI \longrightarrow I ^{-}+ K ^{+}
$
$
2 I ^{-} \xrightarrow{-2 e ^{-}} I _2
$
$
2 HNO _3+ H _2 O +2 KI \longrightarrow NO _3^{-}+ I _2+2 KNO _3+ H _3 O ^{+}
$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Question Answer]" from 9.2 Nitric Acid→9.2 Nitric Acid — all question types→Chemistry STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

Define an acid salt and a normal salt.

Give chemical equation for :
(i) The laboratory preparation of methane from sodium acetate.
(ii) The reaction of one mole of ethene with one mole of chlorine gas.

Explain, why (or give reasons for)
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled.

Lead nitrate solution treated with calcium chloride solution and products are heated and cooled.

Washing soda has the formula $Na_2CO_3.10H_2O$.What is the mass of anhydrous sodium carbonate left when all the water of crystallization is expelled by heating $57.2 g$ of washing soda?

State one relevant observation for each of the following :
(i) A small piece of zinc is added to dilute hydrochloric acid.
(ii) Dilute hydrochloric acid is added to silver nitrate solution.
(iii) Hydrogen chloride gas fumes in moist air.

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:

Sodiumsulphate
Coppersulphate
Iron(II)sulphate
Zinc carbonate

Dilute sulphuric acid	Copper	Copper carbonate
	Iron	Sodium carbonate
	Sodium
	Zinc

What is aqua regia? How does it help in dissolving gold or platinum? Support your answer with chemical equations.

A sample of ammonium nitrate when heated yields 8.96 litres of steam (measure at $S.T.P$.)
$NH_4NO_3 \rightarrow N_2O + 2H_2O$
(i) What volume of dinitrogen oxide is produced at the same time as 8.96 litres of steam?
(ii) What mass of ammonium nitrate should be heated to produce 8.96 litres of steam? (Relative molecular mass of ammonium nitrate is $80$)
(iii) Determine the percentage of oxygen in ammonium nitrate $(O = 16).$

$200 cm ^3$ of $CO _2$ is collected at S.T.P when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at S.T.P. in original mixture.
$
2 C _2 H _2( g )+5 O _2( g ) \rightarrow 4 CO _2( g )+2 H _2 O ( g )
$