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question 91

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When 50.0 mL of 0.400 mol L-1 Ca(NO3) 2 is added to 50.0 mL of 0.800 mol L-1 NaF,CaF2 precipitates,as shown in the net ionic equation below.The initial temperature of both solutions is 23.0 °C.Assuming that the reaction goes to completion,and that the resulting solution has a mass of 100.00 g and a specific heat of 4.18 J g-1°C-1 ,calculate the final temperature of the solution.
Ca2+(aq) + 2 F-(aq) → CaF2(s)
When 50.0 mL of 0.400 mol L<sup>-1</sup> Ca(NO<sub>3</sub>) <sub>2</sub> is added to 50.0 mL of 0.800 mol L<sup>-1</sup> NaF,CaF<sub>2</sub> precipitates,as shown in the net ionic equation below.The initial temperature of both solutions is 23.0 °C.Assuming that the reaction goes to completion,and that the resulting solution has a mass of 100.00 g and a specific heat of 4.18 J g<sup>-1</sup>°C<sup>-1</sup> ,calculate the final temperature of the solution. Ca<sup>2+</sup>(aq) + 2 F<sup>-</sup>(aq) → CaF<sub>2</sub>(s)     H = -11.5 kJ A) 22.45 °C B) 23.55 °C C) 24.10 °C D) 24.65 °C H = -11.5 kJ


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