First slide

Water and Heavy water

Question

The pH of D₂O and H₂O at 298K is

Easy

A

7.35 and 7.0
B

7.0 and 7.0
C

7.0 and 6.85
D

6.85 and 7.35

Solution

pH of H₂O at 25°C (or) 298K - 7.0
Where as pH of D₂O at 25°C (or) 298K - 7.35
i.e., pH of $\large \mathop {{D_2}O}\limits_{7.35} > \mathop {{H_2}O}\limits_{7.0} \$

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