Gove reasons acidic character of hydride increases while thermal stability decreases from `H_2O` to `H_2Te`

Give reason acidic properties of halogen acid increases from HF to HI and thermal stability decreses.

H_2S is less acidic than H_2Te why ?

Aniline treated with Br_2 in the presence of H_2O gives ………..

Who proved that O_2 released during photosynthesis is from H_2O and not from CO_2

From the rate expression for the following reactions determine their order of reaction and the dimensions of the rate constants:- H_2O_2 (aq) + I_3^-(aq) + 2H^+(aq) rarr 2H_2O_((I))+I_3^- , Rate = k[H_2O_2][I^-]

Does the number of moles ofreaction products increae, decrease or remain same when each of te following equilibria is subjected to a decrease in pressure by increasing the volume? 3Fe(s) + 4H_2O(g) hArr Fe_3O_4(s) +4H_2(g)

1 mole H_2O represents

Does the number of moles ofreaction products increae, decrease or remain same when each of te following equilibria is subjected to a decrease in pressure by increasing the volume? CaO(s) + CO_2(g) hArr CaCO_3(s)

Give reason: H_2O is a liquid while H_2S is a gas at room temperature.

Decompsition of H_(2)O_(2) follows a frist order reactions. In 50 min the concentrations of H_(2)O_(2) decreases from 0.5 to 0.125 M in one such decomposition . When the concentration of H_(2)O_(2) reaches 0.05 M, the rate of fromation of O_(2) will be