Question

Calculate the magnitude of enthalpy change (in cal) when 50 ml of 0.01 M Ca(OH)2 reacts with 50 ml of 0.01 M HCl.

a. 5 cal
b. 10 cal
c. 20 cal
d. 50 cal

Answer 1

To calculate the magnitude of enthalpy change, we need to use the equation q = mcΔT, where q is the heat produced, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. In Example 5.5, the heat produced by the reaction of 50.0 mL of 1.00 M HCl and 50.0 mL of 1.00 M NaOH was calculated. The maximum temperature reached was 28.9 °C.

Step-by-step explanation:

To calculate the magnitude of enthalpy change, we need to use the equation q = mcΔT, where q is the heat produced, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

In Example 5.5, the heat produced by the reaction of 50.0 mL of 1.00 M HCl and 50.0 mL of 1.00 M NaOH was calculated. The maximum temperature reached was 28.9 °C.

By substituting the given values into the equation and solving for q, we can find the approximate amount of heat produced by the reaction.