If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ∘C∘C) of the iron block? (Assume a constant enthalpy of vaporization for water of 44.0 kJ/molkJ/mol.)

Question

Autumn

Chemistry

9 December, 09:31

If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ∘C∘C) of the iron block? (Assume a constant enthalpy of vaporization for water of 44.0 kJ/molkJ/mol.)

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Answers (1)

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Aldo Haynes · Answer 1

91 °C.

Explanation:

q = n * Delta Hvap

Where,

n = number of moles

= 0.95/18

= 0.053 mol.

q = 0.053 * - 44

= - 2.32 kJ

q = - qw

= - (-2.32)

= 2.32 kJ.

q = m * C * Delta T

Delta T = Temp. f - Temp. i

Temp. f = q / (m * C) + Temp. i

= 2320 / (75 * 0.449) + 22

= 91 °C.