Home
Class 11
CHEMISTRY
A 0.05 L sample of 0.2 M aqueous hydroch...

A 0.05 L sample of 0.2 M aqueous hydrochloric acid is added to 0.05 L of 0.2 M aqueous ammonia in a calorimeter. Heat capacity of entire calorimeter system is 480 J/K. The temperature increase is 1.09 K. Calculate `Delta_(r )H^(@)` in kJ/mol for the following reaction :
`HCl(aq.)+NH_(3)(aq.)rarrNH_(4)Cl(aq.)`

A

`-52.32`

B

`-61.1`

C

`-55.8`

D

`-58.2`

Text Solution

Verified by Experts

The correct Answer is:
A
m mole of acid `=0.05 xx 0.2 =0.01`
`Delta_(r )H^(@)=-(480xx1.09)/(0.01 xx 1000)=-52.32 " kJ"//"mol"`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 1 (Q.1 To Q.30)|6 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 1 (Q.31 To Q.60)|2 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 3 - Subjective Problems|20 Videos

Similar Questions

Explore conceptually related problems

When 1.0g of oxalic acid (H_(2)C_(2)O_(4)) is burned in a bomb calorimeter whose heat capacity is 8.75kJ/K, the temperature increases by 0.312K. The enthalpy of combustion of oxalic acid at 27^(@)C

A sample of CH_(4) of 0.08g was subjected to combustion at 27^(@)C in a bomb calorimeter. The temperature of the calorimeter system was found to be raised by 0.25^(@)C . If heat capacity of calorimeter is 18 kJ//""^(@)C, Delta H for combustion of CH_(4) at 27^(@)C is

Determine the values of K_(c) for the following reacton Ni_((s))+2 Ag _((aq))^(+)to Ni_((aq))^(2+)+2Ag _((s)) E^(0) =1.05V.

-100 cm^3 of 0.1 M HCl and 100 cm^2 of 0.1.M NaOH solutions are mixed in a calorimeter. If the heat liberated is "Q" K.Cal, the heat of neutralization (DeltaH) (in K.Cal) of HCl_((aq)) and NaOH_((aq)) is

What volume of 0.250 M HNO_3 reacts with 42.4 mL of 0.150 M Na_2CO_3 in the following reaction ? 2HNO_(3(aq)) + Na_2 CO_(3(aq)) to 2NaNO_(3(aq)) + H_2O_((aq)) + CO_(2(aq))

The volume of 0.1 M AgNO_(3) should be added to 10.0 ml of 0.09 M K_(2)CrO_(4) to precipitate all the chromate as Ag_(2)CrO_(4) is

The E^(@) at 25^(@)C for the following reaction at the indicated concentrations is 1.50 V . Calculate the DeltaG in kJ at 25^(@)C , Cr(s) + 3Ag^(+) (aq. 0.1 M)to Ag(s) + Cr^(3+) (aq. 0.1 M)

The pressure in a monoatomic gas increases linearly from 4 xx 10^5 Nm^(-2) to 8 xx 10^5 Nm^(-2) when its volume increases from 0.2 m^3 to 0.5 m^3 . Calculate the following: molar heat capacity of the gas.