Question

# Three statements are given below

i) The enthalpy of any element is zero in their standard state

ii) The heat of neutralisation for any strong acid and strong base at 25°C is -13.7 kJ/mole is a mathematical form of first+ =

iii) law of thermodynamics if work is done by the system according IUPAC

- i only correct
- ii and iii are correct
- i and iii are correct
- all are correct

## The correct answer is: i and iii are correct

### Related Questions to study

### The enthalpy change involved in the oxidation of glucose is -2880 KJ mol-1 25% of this energy is available for muscular work. If 100 KJ of muscular work is needed to walk one kilometer, what is the maximum distance that a person will be able to walk after consuming 120 gm of glucose?

### The enthalpy change involved in the oxidation of glucose is -2880 KJ mol-1 25% of this energy is available for muscular work. If 100 KJ of muscular work is needed to walk one kilometer, what is the maximum distance that a person will be able to walk after consuming 120 gm of glucose?

### For the reduction of lead oxide by coke S are found tobe 108.8 kJ mol^{-1} and 190 JK^{-1} mol^{-1} respectively. The minimum temperature above which the reaction will be spontaneous will be

### For the reduction of lead oxide by coke S are found tobe 108.8 kJ mol^{-1} and 190 JK^{-1} mol^{-1} respectively. The minimum temperature above which the reaction will be spontaneous will be

### Calculate the free energy change for the following reaction at 300K Givenand

### Calculate the free energy change for the following reaction at 300K Givenand

### In which of the following reactions the entropy change is positive?

### In which of the following reactions the entropy change is positive?

### 3 If entropies of limestone ,lime and carbon dioxide are 93,39 and 213 J/mol/K. Then in JK^{–1} at 300K is

### 3 If entropies of limestone ,lime and carbon dioxide are 93,39 and 213 J/mol/K. Then in JK^{–1} at 300K is

### The direct conversion of A to B is difficult. Hence it is carried out by the following shown path: . where e.u is entropy unitThen

### The direct conversion of A to B is difficult. Hence it is carried out by the following shown path: . where e.u is entropy unitThen

### 204 kjheat of hydrognentaion of each C=C bond in benzene

### 204 kjheat of hydrognentaion of each C=C bond in benzene

### Heat evolved in the reaction is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

### Heat evolved in the reaction is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

### What is the equation for a damped oscillator, where k and b are constants and is x displacement.

### What is the equation for a damped oscillator, where k and b are constants and is x displacement.

In the given reaction radioactive radiation are emitted in the sequence

In the given reaction radioactive radiation are emitted in the sequence

A hypothetical radioactive nucleus decays according to the following series If the mass number and atomic number of *A* are respectively 180 and72. Then to atomic number and mass number of *A *will respectively be

A hypothetical radioactive nucleus decays according to the following series If the mass number and atomic number of *A* are respectively 180 and72. Then to atomic number and mass number of *A *will respectively be

In the given nuclear reaction represents

In the given nuclear reaction represents