Question

Which of the gas turns white anhydrous copper sulphate to blue?​

Answer 1

Answer:

Pure copper(II) sulfate is white. It is also known as anhydrous copper(II) sulfate because it has no water in it. When water is present in a sample of copper(II) sulfate it turns blue.

Answer 2

$\hugeᎪɴՏᴡᴇʀ$

$\huge \boxed{\fcolorbox{pink}{blue}{Pure \: \: copper}}$

${\small{\boxed{\mathcal{\red{sulfate \: is \: white. \: It \: is \: also \: known \: as \: anhydrous \: copper}}}}}$

${\small{\boxed{\mathcal{\blue{sulfate \: because \: it \: has \: no \: water \: in \: it. \: When \: water \: is \: present \: in \: a \: sample \: of \: copper}}}}}$

${\small{\boxed{\mathcal{\green{sulfate \: it \: turns \: blue.}}}}}$