What volume of a 3.5 M LiOH solution is needed to titrate 253 ml of a 2.75 M HF solution?
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The change in internal energy = 2.701 x 10² kJ
<h3>Further explanation</h3>Given
Heat absorbed by system = 1.69 x 10² kJ
Work done on system = 1.011 x 10² kJ
Required
The change in Internal energy
Solution
We can use the first law of Thermodynamics :
The sign rules for heat and work are set as follows:
• The system receives heat, Q +
• The system releases heat, Q -
• The system does work, W -
• the system accepts work, W +
Heat absorbed/receive heat from surrounding = Q+
Work done on the system = W+
and input the given values