titration Mohr salt with potassium permanganate

The formula of Mohr's salt is

• FeSO₄.NH₄SO₄.6H₂O

• NH₄Fe(SO₄)₂.6H₂O

• (NH₄)₂Fe(SO₄)₂.H₂O

• FeSO₄.(NH₄)₂SO₄.6H₂O

The molar mass of Mohr's salt is

• 382 g mol^-1

• 392 g mol^-1

• 292 g mol^-1

• 362 g mol^-1

dil. sulphuric acid is added to the preparation of standard Mohr's salt solution is

• to make the solution acidic

• to prevent hydrolysis of Mohr's salt

• to make the solution neutral

• to make the solution basic

No. of moles of solute dissolved per kg of solvent is termed as

• molality

• molarity

• mole fraction

• normality

The apparatus not used in the preparation of standard Mohr's salt solution is

• volumetric flask

• burette

• analytical electronic balance

• none of these

The end point of this titration is

• colourless to light permanent pink

• colourless to orange

• colourless to black

• pink to orange

Indicator used in this titration is

• Phenolphthalein

• Methyl orange

• Potassium permanganate

• None of these

The oxidising agent in this redox titration is

• Mohr's salt

• KMnO₄

• (NH₄)₂SO₄

• H₂SO₄

the oxidation number of Mn in KMnO₄ is

• 4

• 5

• 7

• 8

The formula used for the calculation of the result of this titration is

• V_MnO4- x M_MnO4- x 5 = V_Fe2+ x M_Fe2+ x 1

• V_MnO4- x M_MnO4- x 2 = V_Fe2+ x M_Fe2+ x 10

• V_MnO4- x M_MnO4- = V_Fe2+ x M_Fe2+

• V_MnO4- x M_MnO4- x 3 = V_Fe2+ x M_Fe2+ x 2