Choose an incorrect match of the colour of co | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

Which of the following cations does not give a precipitate with $H_2S$ in a neutral medium?

$A$ laboratory reagent imparts green colour to the flame. On heating with solid $K_2Cr_2O_7$ and conc. $H_2SO_4$,it evolves a red gas. Identify the reagent.

$A$ salt '$A$' which gives a green flame with a Bunsen burner,on reaction with dil. $H_2SO_4$ produces gas $(2)$ and white turbidity $(Z)$. The saturated solution of gas $(2)$ on reaction with $H_2S$ gas produces '$Z$'. Then select the $CORRECT$ statement.

How do we differentiate between $Fe^{3+}$ and $Cr^{3+}$ in group $III$?

Precipitate of group $IV$ cations takes place when $H_2S$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module