Sodium metal is placed in water to produce sodium hydroxide (NaOH) ions and hydrogen gas (H2).
Which substance in the chemical reaction is a solid?
a Sodium
b Water
C Sodium hydroxide ions
d Hydrogen vapor

a Sodium

Explanation:

The solid in this reaction is the sodium metal. A solid is a substance held together by attractive forces that are very strong.

Solids have a fixed shape and volume.

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 :