Advertisements
Advertisements
Question
Answer the following.
Acidic character of hydrides of group 16 elements increases from H2O to H2Te. Explain.
Solution
The acidic character of the hydrides increases from H2O to H2Te because the bond dissociation enthalpy of the H–E bond decreases down the group. (where, E = O, S, Se, Te)
APPEARS IN
RELATED QUESTIONS
Select appropriate answers for the following.
BrCl reacts with water to form _______.
Answer the following.
Give two uses of ClO2.
Answer the following.
Write the names of allotropic forms of selenium.
Answer the following.
The pKa value of HCl is - 7.0 and that of HI is -10.0. Which is the stronger acid?
Complete the following.
\[\ce{ICl3 + H2O -> \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{} + ICl}\]
Complete the following.
BrCl + H2O → _______ + HCl
Complete the following.
\[\ce{XeF6 + 6H2O -> \underline{}\underline{}\underline{}\underline{} + HF}\]
Fluorine shows only –1 oxidation state while other halogens show –1, +1, +3, +5 and +7 oxidation states. Explain.
Answer the following.
Distinguish between rhombic sulfur and monoclinic sulfur.
Acidic strength of halogen acids increases in the order of _______.
Write the order of ionic character of halides with monovalent metal (M).
Which of the following is INCORRECT with respect to given reaction?
\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]
Which of the following statements are TRUE?
The oxidation state of sulphur in H2S2O7 is ______.
The oxidation state of halogen atom in perhalic acid and hypohalous acid are respectively ____________.
Which of the following oxyacid of chlorine has highest thermal stability?
Which among the following gases is used to produce and sustain powerful super conducting magnets for NMR and MRI systems?
What is the oxidation state of sulphur in oil of vitriol?
What is the highest oxidation state possessed by chlorine in its oxyacids?
The most stable +2 oxidation state is exhibited by ______.
Which halide of magnesium has highest ionic character?
What is the oxidation number of gold in the complex [AuCl4]1−?
Consider the following reaction.
I. \[\ce{Na2B4O7 ->[760° C] {...A...} + B2O3}\]
II. \[\ce{Si + KOH + H2O ->{...B...} + H2\uparrow}\]
III. \[\ce{P2O5 + HNO3 -> HPO3 + {...C...}}\]
IV. \[\ce{NH3 + Cl2(excess) -> {...D...} + HCl}\]
Identify the missing products of the given reactions.
Give two reactions in which acidified K2Cr2O7 is used as an oxidizing agent.
What is the action of hydrochloric acid on the following?
Na2CO3
What is the action metal on elements of group 17?
