Question

Ramesh took two beakers A and B containing hot water and cold water respectively . In each beaker he dropped a crystal of copper sulphate . He kept it undisturbed. After some time what did he observe ? Why ?

Answer 1

CuSO4.5H2O is soluble in water. With time the CuSO4 dissolves and begins to diffuse throughout the beaker. Left undisturbed, even after a long time, the bottom of the beaker will be quite blue and the upper portions will be much less blue in color.

Answer 2

. A 15.0 mL sample of HNO3 of unknown concentration was titrated with 0.109 M NaOH. A volume of 18.6 mL of the base was needed to neutralize the acid sample. What is the molarity of the HNO3 solution?

Answer 3

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Answer 4

2) Fill them with hot & cold water respectively.