Advertisements
Advertisements
Questions
Answer the following.
Give two reactions showing the oxidising property of concentrated H2SO4.
Answer the following.
Give two chemical reactions to explain oxidizing property of concentrated H2SO4.
Advertisements
Solution
Metals and nonmetals both are oxidized by hot, concentrated sulfuric acid which itself gets reduced to SO2.
- \[\ce{\underset{Copper}{Cu} + \underset{\underset{acid (Conc.)}{Sulfuric}}{2H2SO4} -> \underset{\underset{sulphate}{Copper}}{CuSO4} + \underset{\underset{dioxide}{Sulfur}}{SO2} + 2H2O}\]
- \[\ce{\underset{Sulphuric}{S} + \underset{\underset{acid (Conc.)}{Sulfuric}}{2H2SO4} -> \underset{\underset{dioxide}{Sulfur}}{3SO2} + 2H2O}\]
APPEARS IN
RELATED QUESTIONS
Select appropriate answers for the following.
Stability of interhalogen compounds follows the order _______.
In interhalogen compounds, which of the following halogens is never the central atom?
Select appropriate answers for the following.
Which of the following has one lone pair of electrons?
Answer the following.
Write the order of the thermal stability of the hydrides of group 16 elements.
Complete the following.
BrCl + H2O → _______ + HCl
Complete the following.
\[\ce{XeF6 + 6H2O -> \underline{}\underline{}\underline{}\underline{} + HF}\]
Complete the following.
\[\ce{XeOF4 + H2O -> \underline{}\underline{}\underline{}\underline{} + HF}\]
Answer the following.
Acidic character of hydrides of group 16 elements increases from H2O to H2Te. Explain.
Fluorine shows only –1 oxidation state while other halogens show –1, +1, +3, +5 and +7 oxidation states. Explain.
The halide that undergoes sp3d hybridisation is ____________.
Which one of the following ions has same number of unpaired electrons as those present in V3+ ion?
Which of the following halogens has the least affinity towards hydrogen?
Which of the following is INCORRECT with respect to given reaction?
\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]
What is the highest oxidation state possessed by phosphorus in it's oxyacids?
What is the highest oxidation state possessed by phosphorus in it's oxyacids?
The oxidation state of sulphur in H2S2O7 is ______.
The oxidation state of halogen atom in perhalic acid and hypohalous acid are respectively ____________.
The maximum positive oxidation state shown by halogen is ______.
What is the action of selenium on magnesium metal?
Which among the following compounds does not act as reducing agent?
Among the trihalides of nitrogen which one is the most basic?
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.
Explain reactivity of halogens towards oxygen.
What is the action of hydrochloric acid on the following?
Na2CO3
What is the action of H2 on elements of group 17?
What is the action metal on elements of group 17?
Arrange the following in the increasing order of the property mentioned:
\[\ce{HOCl}\], \[\ce{HClO2}\], \[\ce{HClO3}\], \[\ce{HClO4}\] (acidic strength)
Arrange the following in the increasing order of the property mentioned:
\[\ce{HF}\], \[\ce{HCl}\], \[\ce{HBr}\], \[\ce{HI}\] (thermal stability)
