Two Solutions,initially at 24

question 110

Multiple Choice

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

• A) -35 kJ
• B) -69 kJ
• C) -250 kJ
• D) -16 kJ
• E) -140 kJ

---

Definitions:

Remediation

The process of correcting or improving a deficiency or problem area, often used in educational and environmental contexts.

Rehabilitation

The process of restoring someone to health or normal life through training and therapy after imprisonment, addiction, or illness.

Evidence-based Practice

A decision-making process that integrates the best available research with clinical expertise and patient values.

Therapeutic Process

A structured series of interventions and interactions aimed at improving a person's mental health or addressing psychological issues.