Question

A compound X pale green in colour , when heated it produces a colourless residue left in the test tube.
a-name the x and write its chemical formula.
b-name the gas and residue produced.
c-write the balanced chemical equation for this equation.

Answer 1

Answer:

The green colour substance is Ferrous sulphate.

When ferrous sulphate is heated strongly, it decomposes to form ferric oxide, sulphur dioxide and sulphur trioxide : 

    2FeSO4(s)        −→heat Fe2O3(s)         +SO2(g)            + SO3(g)Ferrous sulphate       Ferric Oxide       Sulphur              Sulphur(Green Colour)         (Brown Colour)     dioxide              trioxide

This is a decomposition reaction since one substance is splitting up into three substances.  In this reaction , the green colour of ferrous sulphate changes to brown due to the formation of ferric oxide . A smell of burning sulphur is obtained due to the the formation of sulphur dioxide.

Hope it helps.....pls mark brainliest........

Answer 2

Answer:

ferrous sulphate is the green colour substance

Explanation:

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