Question

Number of hydrogen ions present in 10 million part
of 1.33 cm of pure water at 25°C is
(a) 6.023 million (b) 60 million
(c) 8.01 million
(d) 80.23 million​

Answer 1

Answer:

10 million=10-7

so,10 millionth part of 1.33cm3

=1.33*10-7[H+]

=10-7 mol/litre

1000 ml contain 10-7mole

1 ml-----------=10-7/1000 mol 1.33*10-7ml=1.33*10-17

no. of [H+]ions=

1.33*10-17*6.023*10²³ =8.01million

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