Aniket's Chemistry Challenges ( Part 1 )

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The Question is simple and has been made taking the base reaction as decomposition of A. The products have to be identified by various experiments and I have also mixed some Atomic Structure in it. I Hope you will like to work with this question. :) ( 100% Original Question )

Compound $A$ on heating gives a mixture of gases and some moisture .I passed the mixture through alkaline pyragallol and the mixture weight reduced by 12 grams.

Then I passed the remaining mixture through starch paper and the mixture turned the starch paper blue. So I heated the mixture with conc. Caustic Soda to get compound $F$ and $G$ and some water. (Mol. Wt. Of $F > G$ ). I got x grams of $G$ and y grams of $F$ .

Now, I cooled the mixture to 99°C to remove moisture in the form of liquid water.

Then I was left with my last gas which I treated with ${CaC }_{2}$ to get $P$ . $P$ on hydrolysis with hot water liberates a $Q$ which when added to $\ce {Hg2Cl2 }$ results on the formation of black ppt.

Also, $Q$ upon passing through excess of ${Ni}^{+2}$ gives compound with colour $z$ .

This colour $z$ is also observed when electron makes transition from $n = a$ to $n = b$ in Hydrogen atom and from $n = c$ to $n = d$ & $n = e$ to $n = d$ in ${Li}^{+2}$ ion. Where c and e are the least 2 values of n of the many transitions to n = d .

Enter Your answer as : (mol. Wt. Of $A$ ) + ( weight of $A$ used ) + (no. of gaseous products (including moisture)) + (mol. Wt. Of last gas) + $x + y + a + b + c + d + e$ .

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Details and Assumptions

• All reactions are complete (no partial or reversible reaction)

• Refer to this periodic table for atomic weights . And take weights of elements to nearest integer , like for Lithium given weight is 6.9 you take 7.0 .

• Refer to this for evaluating a,b,c,d & e.

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