Why is h2o a liquid and H2S is a gas?

Oxygen has smaller size and higher electronegativity as compared to sulphur. Therefore, there is extensive hydrogen bonding in H2O, which is absent in H2S. Molecules of H2S are held together only by weak van der Waal’s forces of attraction. Hence, H2O exists as a liquid while H2S as a gas.

Why h2o is liquid and H2S is gas in room temperature?

Both H2S and H2O undergo intermolecular hydrogen bonding. Oxygen atom is more electronegative than sulphur atom hence the strength of hydrogen bonding between H2O molecules is much greater than the strength of hydrogen bonding between H2S molecules. Consequently H2O is liquid while H2S is gas.

Why h2o is liquid and nh3 is gas?

given that the nitrogen ATOM has ONLY the one lone pair..the opportunity for intermolecular interaction via hydrogen-bonding is diminished with respect to water. i.e. nitrogen IS LESS electronegative than oxygen, and polarity is not pronounced in the ammonia molecule as compared to the water molecule…

Is liquid and h2s a gas?

Water is a liquid while hydrogen sulphide is a gas because the hydrogen bonding in water causes the water molecules to be associated with each other due to intermolecular forces of attraction.

Why H2O is liquid at room temperature?

Water is a liquid at room temperature because hydrogen bonds between water molecules provide enough cohesive force to hold them together. Polar substances dissolve readily in water because they can replace energetically favorable water-water interactions with even more favorable water solute interactions.

Why H20 is liquid and H2S is gas Class 11?

Water exists as aliquidat room temperature with a high boiling point. Sulphur is less electronegative than oxygen, and the S-H bond is much less polar than the O-H bond. Hence, there is no hydrogen bonding in hydrogen sulphide, and it exists as agasnormally with discreteH2Smolecules. H2O is a liquid but H2S is a gas.

Why h20 is liquid and H2S is gas Class 11?

Why is H2O more polar than NH3?

The overall dipole moment of a H2O molecule is greater than that of an NH3 molecule as the Oxygen atom has two lone pairs of electrons which reduce the bond angle from 120 degrees to 104.5 degrees as lone pair-bond pair repulsion is greater than bond pair-bond pair repulsion and the electrons arrange themselves in a …

Why is H2O liquid?

At room temperature (anywhere from zero degree centigrade to 100 degrees centigrade), water is found in a liquid state. This is because of the tiny, weak hydrogen bonds which, in their billions, hold water molecules together for small fractions of a second. Water molecules are constantly on the move.

Why H2S and H2O have different bond angles?

H20 have greater bond angle than H2S because in H20 ; the electronegativity of sulfer is less than oxygen; bond pair of electron drawn more toward ‘o’then’s’. The central atom has little tendency to open up the angle IN H2S then H2O..

Why H20 is liquid?

Is H2O polar or nonpolar?

Water (H2O), like hydrogen fluoride (HF), is a polar covalent molecule. When you look at a diagram of water (see Fig. 3-2), you can see that the two hydrogen atoms are not evenly distributed around the oxygen atom.

Why H2O is liquid and H2S is gas at room temperature?

why H 2 O is liquid and H 2 S is gas at room temperature? Whether a compound will be a solid, liquid or gas at a given temperature can be explained by the attractive forces between its molecules. H2S (hydrogen sulfide) is a gas because at room temperature the forces and interactions between the molecules of hydrogen sulfide are very weak.

Why is hydrogen sulphide a gas while water is a liquid?

So, lesser energy is required to overcome the forces of interaction between the hydrogen sulphide molecules than those between water molecules. This energy is available at room temperature and hence, hydrogen sulphide is a gas, while water is still a liquid.

Why is the intermolecular hydrogen bonding stronger in H2S than water?

In water molecule the more electronegative oxygen atom has small size and is present as a central atom, so that it forms the intermolecular hydrogen bonding strongly. However, in $\\ce{H2S}$ molecule the central atom sulfur is less electronegative and is bigger in size, so that it is unable to form the intermolecular hydrogen bonding.

Why hx2s can not exist in liquid form?

However, in H X 2 S molecule the central atom sulfur is less electronegative and is bigger in size, so that it is unable to form the intermolecular hydrogen bonding. Therefore H X 2 S molecule can not exist in liquid form.