ThermochemistryHard

Question

The reaction of zinc metal with hydrochloric acid was used to produce 1.5 moles of hydrogen gas at 298 K and 1 atm pressure. The magnitude of work done in pushing back the atmosphere is

Options

A.596 cal
B.894 cal
C.447 cal
D.298 cal

Solution

$w = - P.V_{H_{2}} = - nRT = - 1.5 \times 2 \times 298 = - 894\text{ cal}$

Create a free account to view solution

View Solution Free
Topic: Thermochemistry·Practice all Thermochemistry questions

More Thermochemistry Questions

A solution of 500 ml of 2 M-KOH is added to 500 ml of 2 M-HCl and the mixture is well shaken. The rise in temperature T1...The value of ΔHsol of anhydrous copper (II) sulphate is −66.11 kJ. Dissolution of 1 mole of blue vitriol, [Copper (II) s...Calculate the enthalpy of formation (in kcal/mol) of HI(g) from the following data.H2(g) + Cl2(g) → 2HCl(g): ΔH = −44.20...Determine the standard enthalpy of the reaction C3H8(g) + H2(g) → C2H6(g) + CH4(g), using the given enthalpies under sta...The ᐃHfo for CO2(g), CO(g) and H2O(g) are - 395.5, - 110.5 and - 241.8 kJ mol-1 respectively. The standard enthalp...