A pink coloured salt turns blue on heating. The presence of which cation is most likely?

C u^{2 +}

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F e^{2 +}

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Z n^{2 +}

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C o^{2 +}

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Solution

The correct option is C $C o^{2 +}$
Salts of cobalt are pink.
A pink coloured salt turns blue on heating. This indicates presence of $C o^{2 +}$ cation.

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Similar questions

Z n^{2 +}

C u^{2 +}

Z n^{2 +}

C u^{2 +}

M^{2 +}

Z n^{2 +} > S c^{2 +} = C u^{2 +} > T i^{2 +} = N i^{2 +} > V^{2 +} = C o^{2 +} > C r^{2 +} = F e^{2 +} > M n^{2 +}

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