Choose an incorrect match of the colour of co | vedclass

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Question

(C) The correct formulas for the ammonium phosphomolybdate and ammonium arsenomolybdate precipitates are $(NH_4)_3[P(Mo_{12}O_{40})]$ and $(NH_4)_3[As

Vedclass · Accepted Answer

$(NH_4)_3[As(Mo_{12}O_{40})] 	o$ Yellow precipitate

Vedclass · Answer

(C) The correct formulas for the ammonium phosphomolybdate and ammonium arsenomolybdate precipitates are $(NH_4)_3[P(Mo_{12}O_{40})]$ and $(NH_4)_3[As(Mo_{12}O_{40})]$ respectively. Both of these are yellow precipitates. $MnO(OH)_2$ is a brown precipitate formed during the test for manganese. $K_3[Co(NO_2)_6]$ is a yellow precipitate formed during the test for cobalt. In the provided options,the chemical formulas for the arsenomolybdate and phosphomolybdate complexes were written incorrectly as $(NH_4)_3[As(Mo_3O_{10})_4]$ and $(NH_4)_3[P(Mo_3O_{10})_4]$. Since the question asks for the incorrect match and the provided formulas in options $C$ and $D$ are chemically inaccurate representations of the standard yellow precipitates,they are technically incorrect. However,assuming the intent was to identify the standard test results,all listed colours are correct for their respective compounds. Given the options,if we must choose an incorrect match based on the provided stoichiometry,options $C$ and $D$ are chemically flawed.

Choose an incorrect match of the colour of compounds.

Similar Questions

An aqueous solution containing $FeSO_4$,$Al_2(SO_4)_3$,and chrome alum is treated with $Na_2O_2$ and heated,followed by filtration. The resulting products are:

On passing $H_2S$ gas,a black precipitate of $II$ group is obtained. The mixture may not contain:

Salt $X$ is:
$X \text{ (Colourless salt)}$ $\xrightarrow[\Delta]{NaOH} Y$ $\xrightarrow{HCl} \text{White fumes}$
$X \text{ (Colourless salt)}$ $\xrightarrow{CaCl_2} Z \text{ (White ppts.)}$ $\xrightarrow{KMnO_4} \text{Colourless solution}$

$A$ $0.3 \, M$ $HCl$ solution contains the following ions: $Hg^{2+}, Cd^{2+}, Sr^{2+}, Fe^{2+}, Cu^{2+}$. The addition of $H_2S$ to the above solution will precipitate which of the following?

Which of these reactions is correct?

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