Two Solutions, Initially at 24 $\Delta$ _rH° for the Reaction as Written Below

question 122

Multiple Choice

Two solutions, initially at 24.60 °C, are mixed in a coffee cup calorimeter (C_cal = 15.5 J °C^-1) . When a 100.0 mL volume of 0.100 mol L^-1 AgNO₃ solution is mixed with a 100.0 mL sample of 0.200 mol L^-1 NaCl solution, the temperature in the calorimeter rises to 25.30 °C. Determine the $\Delta$ _rH° for the reaction as written below. Assume that the density and specific heat capacity of the solutions is the same as that of water. NaCl(aq) + AgNO₃(aq) ? AgCl(s) + NaNO₃(aq) $\Delta$ _rH° = ?

• A)-35 kJ mol^-1
• B)-60 kJ mol^-1
• C)-250 kJ mol^-1
• D)-16 kJ mol^-1
• E)-140 kJ mol^-1

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Definitions:

Highly Valued Uses

These are applications or purposes for which a resource, product, or service is considered particularly beneficial or desirable, attracting higher willingness to pay.

Specialization

The practice of focusing resources on the production of specific goods or services to increase efficiency and expertise.

Total Output

The total quantity of goods or services produced by a firm or economy over a specific period.

Invisible Hand

The concept that the self-regulating nature of the marketplace leads to the efficient allocation of resources through individuals pursuing their own self-interest, originally introduced by Adam Smith.