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Chemistry
Potassium chromate is converted into potassium dichromate by adding
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Q. Potassium chromate is converted into potassium dichromate by adding
COMEDK
COMEDK 2008
The d-and f-Block Elements
A
potassium hydroxide
27%
B
sulphuric acid
62%
C
acetic acid
4%
D
ammonium hydroxide.
6%
Solution:
$\underset{\text{Potassium chromate}}{2K_2CrO_4} +\underset{\text{(conc.)}}{H_2SO_4} \rightarrow \underset{\text{Potassium dichromate}}{K_2Cr_2O_7} + K_2 SO_4 + H_2 O$