Advertisements
Advertisements
प्रश्न
Is Electrolysis of water an endothermic reaction or an exothermic reaction?
Advertisements
उत्तर
Electrolysis of water: Endothermic reaction
Electrolysis of water needs energy to break water into hydrogen and oxygen.
APPEARS IN
संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
What is wrong with the following chemical equation?
Mg + O → MgO
Correct and balance it.
Balance the given equation:
BaCI2 + H2SO4 
BaSO4 + HCI
Aluminium burns in chlorine to form aluminium chloride (AlCl3). Write a balanced chemical equation for this reaction.
Write balanced chemical equation with state symbols for the following reaction:
Sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water.
Ammonia reacts with oxygen to form nitrogen and water. Write a balanced chemical equation for this reaction. Add the state symbols for all the reactants and products.
State the various characteristics of chemical reactions.
A white precipitate can be obtained by adding dilute sulphuric acid to:
(a) CuSO4 solution
(b) Nacl solution
(c) BaCl2 solution
(d) Na2SO4 solution
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
Balance the following equation. Also name the product formed.
`"KCIO"_3 → "KCI" +"O"_2`
In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?
Balance the equation stepwise.
H2S2O7(l) + H2O(l) → H2SO4(l)
What information do the following chemical equations convey? Mg + 2HCl → MgCl2+ H2
Write the balanced chemical equation of the following reaction.
potassium dichromate + hydrochloric acid → Potassium chloride + chromium chloride + water + chlorine
A student mixes sodium sulphate powder in barium chloride powder. What change would the student observe on mixing the two powders? Justify your answer and explain how he can obtain the desired change.
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + 2HC1→ ZnCl2 + H2
Name the following:
The gas evolved when a dilute acid is added to chalk [limestone].
Write word equation for the following chemical reaction given below. Also state the observation seen in the case.
\[\ce{ZnCo3->[\triangle] ZnO + CO2}\]
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
3CuO + NH3 → 3Cu + 3H2O + N2
