If $C O_{2} (g)$ under pressure is passed into $N a_{2} C r O - 4 (a q)$ , yellow colour solution changes to:

blue

No worries! We‘ve got your back. Try BYJU‘S free classes today!

green

No worries! We‘ve got your back. Try BYJU‘S free classes today!

red

No worries! We‘ve got your back. Try BYJU‘S free classes today!

orange-red

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D orange-red
If $C O_{2} (g)$ under pressure is passed into $N a_{2} C r O_{4} (a q)$ , yellow colour solution changes to orange-red colour due to formation of $N a_{2} C r_{2} O_{7} (a q)$

$H_{2} O + C O_{2} ⇌ H_{2} C O_{3} carbonic acid$
$H_{2} C O_{3} carbonic acid ⇌ H^{+} + H C O_{3}^{-}$

$2 C r O_{4}^{2 -} yellow + 2 H^{+} ⇌ C r_{2} O_{7}^{2 -} orange-red + H_{2} O$

Suggest Corrections

Similar questions

C O_{2}

N a_{2} C r O_{4}

N a_{2} C r O_{4}

C O_{2}

A solution changes the colour of turmeric indicator from yellow to red. The solution is:

C O_{2}

a q . N a_{2} C r O_{4}

What happens when SO₂ gas is passed through potassium dichromate solution?

Join BYJU'S Learning Program