Which of the following is a reduction half-reaction? no + 2h2o → n3 –+ 4h ++ 3e – na → na ++ e – 2h ++ 2e –→ h2 zn → zn 2++ 2e –

Option (c) is the correct answer.

Explanation:

A reduction half reaction is a reaction in which there is gain of electrons.

For example, is a reduction half reaction.

Whereas a reaction in which there is release or removal of electrons is known as an oxidation half reaction.

For example, is an oxidation half reaction.

Therefore, we can conclude that out of the given options 2H ++ 2e –→ H2 is a reduction half-reaction.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.