If water is formed from `H^(+)` ions and `OH^(-)` the heat of formation of water is :

The heat of formation of water is given by :

The reaction which shows heat of formation of water correctly is

Equal volumes of methanoic acid and sodium hydroxide are mixed. If x is the heat of formation of water from its ions then heat evolved on neutralisation is

Equal volumes of methanoic acid and sodium hydroxide are mixed. If x is the heat of formation of water from its ions then heat evolved on neutralisation is

What will be the heat of formation of ethane, if the heat of combustion of carbon is -x kJ ,heat of formation of water is -ykJ and heat liberated during complete combustion of ethane is zkJ

Assertion: The pH of a rain water is 5.6 Reason: H^(+) ions are formed by the reaction of rain water with carbon dioxide present in the atmosphere.

To decompose 9 gm water, requires 142.5 kJ heat the heat of formation of water is

What will be the heat of formation of methane, if the heat of combustion of carbon is '-x' kJ, heat of formation of water is '-y' kJ heat of combustion of methane is '-z' kJ?