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3 years ago

Choose the compound responsible for the ir spectrum shown.

Chemistry

2 answers:

elena55 [62]3 years ago

7 0

Answer:

<u>Option-(A): </u>3-methyl-butane-2-one.

Explanation:

<u>Analyses of the compound's properties:</u>

Upon the analyses of the compounds characteristics or properties we get to know that the compound is the one responsible for generating signals inside the IR spectrum as shown. Because, if we look into the bands around 2900-3000 cm-1 which will find some traces of the C-H bonds inside the given data. While, the C=O intense bands are found in a very low level inside the given band.

AVprozaik [17]3 years ago

5 0

The right answer is the first molecule (3-methyl-butan-2-one).

There are many bands around 2900-3000 cm-1 proving the presence de C-H bound.

There an intense band in 1700 cm-1 proving the presence of C=O.

There's no band proving the presence of aromatic structure, C=C bond nor C-N bond.

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Answer : The mass of vanadium(V) oxide will be $1.51\times 10^{-16}g$

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First we have to determine the moles of $V_2O_5$ .

As, $2\times 6.022\times 10^{23}$ number of vanadium atom present in 1 moles of $V_2O_5$

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$\text{Mass of }V_2O_5=\text{Moles of }V_2O_5\times \text{Molar mass of }V_2O_5$

$\text{Mass of }V_2O_5=(8.3\times 10^{-19}mole)\times (181.88g/mole)=1.51\times 10^{-16}g$

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