# One too many?

Chemistry Level 4

A compound $$A$$ when treated with $$B$$ and then fused with a deliquescent substance $$C$$ gives$$F$$ which turns brown-red on exposure to air. When$$B$$ is added to to$$D$$ the gas produced turns into white fumes of $$E$$on exposure to$$G$$. Also when a solution of $$D$$ is treated with Manganese dioxide, fumes which bleach litmus and turn iodised starch paper blue are produced. When $$D$$ is treated with $$C$$ a white precipitate of $$H$$ is produced which dissolves in excess $$C$$. $$D$$(aq) also produces the white precipitate $$H$$ on treatment with $$E$$ and excess of $$G$$. A boils at $$80^\circ$$C.$$F$$ reacts with $$C$$ and carbon dioxide followed by acidification to produce $$K$$ which decomposes Sodium bicarbonate. Acetylated $$K$$ is is an antipyretic.

Find the sum of the molecular mass of $$A$$ and degree of unsaturation of $$K$$ and molecular mass of $$D$$ to one decimal place.

Note: Read these only if you feel the problem has insufficient information:

• $$A$$ can be obtained from F after treatment with the metal present in philosopher's wool.

• $$H$$ on excess heating produces a refractory material.

• $$C$$ is the hydroxide of the metal lying below the chief metal of lepidolite ore in the periodic table.

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