88.     The pH of a solution whose hydrogen ion concentration is 4 × 10^-4 mol.l^-1 lies between:

1.        6 and 7
2.        5 and 6
3.        4 and 5
4.        3 and 4
5.        2 and 3

89.     The pH of a solution whose hydrogen ion concentration is 5 × 10-6 mol.l-1 lies between:

1.        6 and 7
2.        5 and 6
3.        4 and 5
4.        3 and 4
5.        2 and 3

90.     The pH of a solution containing 4 mmol of HCl per litre is between:

1.        0 and 1
2.        1 and 2
3.        2 and 3
4.        3 and 4
5.        None of the above

91.     The pH of a solution containing 2 mmol of HCl per litre is between:

1.        0 and 1
2.        1 and 2
3.        2 and 3
4.        3 and 4
5.        None of the above

92.     The pH of a solution of 10 mol.l^-1 HCl is:

1.        -1
2.        0
3.        0.1
4.        1
5.        10

93.     The pH of a solution of 0.5 mol.l^-1 H₂SO₄ is:

1.        -1
2.        0
3.        0.3
4.        1
5.        2

94.     The pH of a solution of 100 mmol.l^-1 HCl is:

1.        -2
2.        -1
3.        0
4.        1
5.         2
 
 

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