The enthalpy of formation of water is –285.8 kj/mol. what can be inferred from this statement?

Asked by maham237 @ 22/12/2020 in Chemistry viewed by 320 People

Answered by maham237 @ 22/12/2020

Answer:

The enthalpy of formation of water is -285.8 kJ/mol inferred that, the formation of 1.0 mol of water releases 285.8 kJ.

Explanation:

The sign of enthalpy (ΔH) indicates the type of the thermochemistry of the reaction:

If ΔH is negative, the reaction is exothermic.

If ΔH is positive, the reaction is endothermic.

∵ ΔH is negative.

So, the reaction of formation of water is an exothermic reaction (releases heat).

The enthalpy of formation of water is -285.8 kJ/mol inferred that, the formation of 1.0 mol of water releases 285.8 kJ.

Enthalpy of formation of water

Asked by maham237 @ 09/01/2021 in Chemistry viewed by 285 persons

Calculate the enthalpy of combustion of butane, C4H10, for the formation of H2O and CO2 The enthalpy of formation of butane is -126 kJ/mol.

Which of the following statements about water conservation is false

Asked by admin @ 29/10/2021 in History viewed by 322 persons

All of the following statements about the Edwards Aquifer are true except: a. It feeds several well-known springs in Texas b. It is located entirely within the state of Texas. …

The enthalpy of formation of ammonia is 46

Asked by admin @ 29/08/2021 in Chemistry viewed by 262 persons

The enthalpy of formation of ammonia is -46.0koj mol-1 the enthalpy change for the reaction 2nh3 (g)2n2 (g)+3h2(g) is

Calculate the standard enthalpy of formation of ch3oh

Asked by admin @ 26/08/2021 in Chemistry viewed by 316 persons

Calculate the standard enthalpy of formation of CH3OH(l) from the following data:CH3OH (l) + 3/2 O2(g) → CO2(g) + 2H2O(l) ; ΔrH0 = –726 kJ mol–1C(g) + O2(g) → CO2(g) …

Given standard enthalpy of formation of co and co2

Asked by admin @ 23/08/2021 in Chemistry viewed by 338 persons

Given standard enthalpy of formation of co (-110 kj mol) co2 (-394 kj mol) the heat of combustion when one mole graphite burns

At 300k the standard enthalpies of formation of c6h5cooh

Asked by admin @ 20/08/2021 in Chemistry viewed by 289 persons

at 300 k the standard enthalpies of formation of c6h5cooh ,co2 and h2o are -408 ,-393 and -286 kj mol-1 respectively calculate heat of combustion of benzoic acid at (1) …

Enthalpies of formation of co co2 n2o and n2o4

Asked by admin @ 17/08/2021 in Chemistry viewed by 275 persons

Question 6.12 Enthalpies of formation of CO(g), CO2(g), N2O(g) and N2O4(g) are –110 kJ mol–1, – 393 kJ mol–1, 81 kJ mol–1 and 9.7 kJ mol–1 respectively. Find the value …

The standard enthalpy of formation of nh3 is 46

Asked by admin @ 13/08/2021 in Chemistry viewed by 299 persons

the standard enthalpy of formation of NH3 is _46.0 kj/mol.if the enthalpy of formation of H2 from its atom is _436 kj/mol and that of N2 is _712 kj/mol,the average …

At 300 k the standard enthalpies of formation of c6h5cooh

Asked by admin @ 06/08/2021 in Chemistry viewed by 314 persons

at 300 k the standard enthalpies of formation of c6h5cooh ,co2 and h2o are -408 ,-393 and -286 kj mol-1 respectively calculate heat of combustion of benzoic acid at (1) …

Which statement best describes why liquid water exists on earth

Asked by maham237 @ 13/07/2021 in Biology viewed by 306 persons

A. Earth experiences comet crashes and volcanic eruptions. B. Earth experiences a strong magnetic field and lunar tides. C. Earth has moderate temperatures and a strong gravitational force. D. Eath …

Which statement correctly explains the polarity of the water molecule

Asked by maham237 @ 25/06/2021 in Chemistry viewed by 335 persons

A. The hydrogen end of the molecule has a partial negative charge and the oxygen end has a partial positive charge. B. The oxygen end of the molecule has a …

Which statement about the self ionization of water is correct

Asked by maham237 @ 19/06/2021 in Chemistry viewed by 309 persons

a. Two water molecules interact to form a water molecule and a hydroxide ion. b. Two water molecules interact to form a hydronium ion and a hydroxide ion. c. Two …

Which statement is true about the formation of a bond

Asked by maham237 @ 29/05/2021 in Physics viewed by 264 persons

A. There is an overall release of energy when bonds form. B. There is an overall energy increase when bonds form. C. A bond is formed as atoms are split …

Which statement correctly describes the electrons in a water molecule

Asked by maham237 @ 22/05/2021 in Physics viewed by 337 persons

A.Which statement correctly describes the electrons in a water molecule B.Electrons are pulled closer to the oxygen atom.. C.Electrons are located inside the nucleus of the hydrogen atoms.. D.Electrons are …

Which of these statements is correct about water and oil

Asked by maham237 @ 19/05/2021 in Chemistry viewed by 261 persons

The pictures below show water in a glass and oil in a beaker.Which of these statements is correct about water and oil? (2 points) a) Water is not a mineral …