Calculate the enthalpy change when 50 mL of | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) $1$. Calculate moles of $HCl$: $n_{HCl} = \frac{0.01 	imes 25}{1000} = 2.5 	imes 10^{-4} \ mol$. Since $HCl$ is a strong monoprotic acid,$n_{H^+

Vedclass · Accepted Answer

$0.003425$

Vedclass · Answer

(A) $1$. Calculate moles of $HCl$: $n_{HCl} = \frac{0.01 	imes 25}{1000} = 2.5 	imes 10^{-4} \ mol$. Since $HCl$ is a strong monoprotic acid,$n_{H^+} = 2.5 	imes 10^{-4} \ mol$.$2$. Calculate moles of $Ca(OH)_2$: $n_{Ca(OH)_2} = \frac{0.01 	imes 50}{1000} = 5.0 	imes 10^{-4} \ mol$. Since $Ca(OH)_2$ is a strong base,$n_{OH^-} = 2 	imes 5.0 	imes 10^{-4} = 1.0 	imes 10^{-3} \ mol$.$3$. Determine the limiting reagent: $H^+$ is the limiting reagent because $2.5 	imes 10^{-4} $4$. Calculate enthalpy change: $\Delta H = n_{H^+} 	imes \Delta H^o_{neutralization} = 2.5 	imes 10^{-4} \ mol 	imes (-13.7 \ kcal \ mol^{-1}) = -3.425 	imes 10^{-3} \ kcal = -0.003425 \ kcal$.

Similar Questions

$7 \ g$ of $N_{2(g)}$ at $27 \ ^oC$ is expanded reversibly and isothermally from an initial pressure of $0.5 \ MPa$ to a final pressure of $0.1 \ MPa$. Determine the approximate work done $[\ln \ 5 = 1.6]$ ..... $J$

One mole of an ideal monoatomic gas is heated in a process $PV^{5/2} = \text{constant}$. The amount of heat absorbed in the process for a $36 \ ^\circ C$ rise in temperature is (in $cal$):

Which of the following is true for the reaction $H_2O_{(l)} \rightleftharpoons H_2O_{(g)}$ at $100 ^oC$ and $1 \text{atm}$ pressure?

The standard entropies of $X_2, Y_2$ and $XY_3$ are $60, 40$ and $50 \ J \ K^{-1} \ mol^{-1}$ respectively. For the reaction $X_2 + 3Y_2 \rightleftharpoons 2XY_3; \Delta H = -60 \ kJ$ to be at equilibrium,the temperature should be.....$K$

Observe the following reactions:
$AB_{(g)} + 25 H_2O_{(l)} \rightarrow AB_{(25 H_2O)} ; \Delta H = x \ kJ \ mol^{-1}$
$AB_{(g)} + 50 H_2O_{(l)} \rightarrow AB_{(50 H_2O)} ; \Delta H = y \ kJ \ mol^{-1}$
The enthalpy of dilution $(\Delta H_{dil})$ in $kJ \ mol^{-1}$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module