Here, V=1 litre, ΔV=0.10% of V=

0.10

100

×1=

1

1000

litre
Let ΔP = Change in pressure required for compression of 1 litre of water.
B = bulk modulus of water =2.2×109Nm–2
Using the relation, B=

ΔP

( ΔV V )

, we get
ΔP=B

ΔV

V

=2.2×109×

( 1 1000 )

1

=2.2×1091000
=2.2×106Nm−2