Advertisements
Advertisements
Question
Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name (i) oxidising agent, (ii) reducing agent, in this reaction.
Advertisements
Solution
The balanced chemical reaction is as follows:
ZnO + C → Zn + CO
(i) Oxidising agent: ZnO
It oxidises C to CO.
(ii) Reducing agent: C
It reduces ZnO to Zn.
APPEARS IN
RELATED QUESTIONS
Write the balanced chemical equation for the following reaction.
\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]
What does the symbol (aq) represent in a chemical equation?
Complete and balance the following equation:
NaOH + ............ 
Na2 SO4 + H2O
Correct and balance the following equation:
Ca + H2O 
CaOH + H
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are non-metals.
Write any two observations in an activity which may suggest that a chemical reaction has taken place. Give an example in support of your answer.
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
(a) Name the lead salt.
(b) Name the brown fumes.
(c) Write a chemical equation of the reaction involved.
Complete the following equation:
CH2 + H5OH `("Hot Conc." H_2SO_4)/`>
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
2H2 + O2 → 2H2O
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
\[\ce{2H2O ->[electric][current] 2H2 + O2}\]
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Catalyst
Give word equation for the following chemical reaction and give the names of the product formed.
NH3 + HCl→ NH4Cl
Write word equation for the following chemical reaction given below. Also state the observation seen in the case.
\[\ce{Na2SO3 + 2HCl ->[\triangle] 2NaCl + H2O + SO2}\]
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Balance the following simple equation:
K + H2O → KOH + H2
Balance the following simple equation:
Fe2O3 + H2 → Fe + H2O
Balance the following simple equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
C2H5OH + 3O2 → 2CO2 + 2H2O
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
NaOH + CO2 → Na2CO3 + H2O
What is a product in a chemical equation?
