What is pH of 2 x 10^(-8)molar HCI
solution? Here log2 = 0.301 and
log3 = 0.477
(A) 5.4
(B) 7.7
(C) 6.92
(D) 9.5
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Answer:
Which chapter is this dhbrufbrbf
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∴[H
+
]=[H
+
]
water
+[H
+
]
HCl
=10
−7
+2×10
−8
=12×10
−8
∴pH=−log[12×10
−18
]
=−log[2
2
×3×10
−8
]
=−[2 log(2)+ log(3)+ log(10
−8
)= 6.92.
Option A 5.4
+
]=[H
+
]
water
+[H
+
]
HCl
=10
−7
+2×10
−8
=12×10
−8
∴pH=−log[12×10
−18
]
=−log[2
2
×3×10
−8
]
=−[2 log(2)+ log(3)+ log(10
−8
)= 6.92.
Option A 5.4
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