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Author Question: The combustion of titanium with oxygen produces titanium dioxide: Ti(s) + O2(g) TiO2(s)When 2.090 g ... (Read 89 times)

pepyto

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Question 1

What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 mL of solution having a density of 1.25 g mL-1 by 10.2 °C? (The specific heat of the solution is 3.733 J g-1 K-1.)
8.20 kJ

-11.9 kJ

-7.43 kJ

-12.51 kJ

6.51 kJ


Question 2

The combustion of titanium with oxygen produces titanium dioxide:

Ti(s) + O2(g) → TiO2(s)

When 2.090 g of titanium is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00 °C to 91.30 °C. In a separate experiment, the heat capacity of the calorimeter is measured to be 9.84 kJ K-1. The heat of reaction for the combustion of a mole of Ti in this calorimeter is ________ kJ mol-1.
◦ -3.40
◦ -1.49 × 104
◦ 14.9
◦ 652
◦ -28.5


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Marked as best answer by pepyto on Nov 18, 2019

aloop

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pepyto

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Reply 2 on: Nov 18, 2019
Excellent


jojobee318

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Reply 3 on: Yesterday
:D TYSM

 

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