Bond angle in dimethyl ether is more than water.

In both alcohols and ethers , oxygen is sp^(3) - hybridised and has two lone pairs . However the R-O-H bond angle to alcohols is less than tetrahedral angle of 109^(@)28and the R-O-R bond angle to ethers is more than the tetrahedral angle of 109^(@)28 , Explain why ?

Dimethyl ether is completely soluble in water but diethyl ether is soluble in water to a small extent. Explain.

Bond angle in NH_4^+ is more than that in NH_3 .

Although geometries of NH_(3) and H_(2)O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.

C-O-C bond angle in ethers is higher than H-O-H bond angle in water through O is sp^3 -hybridisedin both the cases.

Williamson's Synthesis of preparing dimethyl ether is a/an