Identify the oxidising agent (oxidant) in the following reactions
(a) $Pb_3O_4 + 8HCl → 3PbCl_2 + Cl_2 + 4H_2O$
(b) $2Mg + O_2 → 2MgO$
(c) $CuSO_4 + Zn → Cu + ZnSO_4$
(d) $V_2O_5 + 5Ca → 2V + 5CaO$
(e) $3Fe + 4H_2O → Fe_3O_4 + 4H_2$
(f) $CuO + H_2 → Cu + H_2O$

Academic Chemistry NCERT Class 10

The oxidizing agents are as follows:

(a) Pb₃O₄

(b) O₂

(c) CuSO₄

(d) V₂O₅

(e) H₂O

(f) CuO

Tutorialspoint

Updated on: 10-Oct-2022

5 Views

Complete and balance the following equations:(a) $Na + O_2 →$(b) $Na_2O + H_2O →$(c) $Fe(s) + H_2O(g) \xrightarrow{red hot}$(d) $Cu(NO_3)(aq) + Zn →$
In the reaction represented by the following equation: CuO (s) + H2 (g) -------> Cu (s) + H2O (l)(a) name the substance oxidised (b) name the substance reduced (c) name the oxidising agent (d) name the reducing agent
Identify the reducing agent in the following reactions(a) $4NH_3 + 5O_2 → 4NO + 6H_2O$(b) $H_2O + F_2 → HF + HOF$(c) $Fe_2O_3 + 3CO → 2Fe + 3CO_2$(d) $2H_2 + O_2 → 2H_2O$
Complete the missing components/variables given as x and y in the following reactions(a) $Pb(NO_3 )_2 (aq) + 2KI(aq) → PbI_2 (x) + 2KNO_3 (y)$(b) $Cu(s) + 2AgNO_3 (aq) → Cu(NO_3)_2 (aq) + x(s)$(c) $Zn(s) + H_2SO_4 (aq) → ZnSO_4 (x) + H_2 (y)$(d) $CaCO_3 (s) →xCaO(s) + CO_2 (g)$
What type of reactions are represented by the following equations?(a) CaO + CO2 ----> CaCO3 (b) 2Na + 2H2O ----> 2NaOH + H2(c) Mg + CuSO4 ----> MgSO4 + Cu(d) NH4NO2 ----> N2 + 2H2O(e) CuSO4 + 2NaOH ----> Cu(OH)2 + Na2SO4
Identify the substances that are oxidised and the substances which are reduced in the following reactions.(i) 4Na(s) + O2(g) → 2Na2O(s)(ii) CuO (s) + H2(g) → Cu (s) + H2O(l)
(a) Classify the following reactions into different types :(i) $AgNO_3(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_3(aq)$(ii) $CaO(s) + H_2O(l) \rightarrow Ca(OH)_2 (aq)$(iii) $2KClO_3(s) \rightarrow 2KCl(aq) + 3O_2 (g)$(iv) $Zn + CuSO_4 \rightarrow ZnSO_4 + Cu$(b) Translate the following statement into a balanced chemical equation : ‘‘Barium chloride reacts with aluminium sulphate to give aluminium chloride and barium sulphate.’’
Complete the following chemical reactions:(a) 3Fe + 4H2O ------>(b) Ca + H2O ------>(c) K + H2O ------>
Complete the mining components/ variables given as x and y in the following reactions:(a) Pb(NO3)2 (aq) + 2KI (aq) → PbI2(x) + 2KNO3 (y)(b) Cu(s) + 2AgNO3 (aq) → Cu (NO3)2 (aq) + x (s)
Which of the following are combination reactions?$2KClO_3 \xrightarrow {heat} 2KCl + 3O_2$$MgO +H_2O \rightarrow Mg(OH)_2 $$4Al + 3O_2 \rightarrow 2Al_2O_3$$ Zn+ FeSO_4\rightarrow ZnSO_4 + Fe$(a) (i) and (iii)(b) (iii) and (iv)(c) (ii) and (iv) (d) (ii) and (iii)
Write the property: $( \frac{a}{b}+\frac{c}{d})+\frac{e}{f}=\frac{a}{b}+( \frac{c}{d}+\frac{e}{f})$.
Which of the following is a displacement reaction?(a) $MgCO_3 \rightarrow MgO + CO_2$ (b) $2Na + 2H_20 \rightarrow 2NaOH + H_2$ (c) $2H_2 + O_2 \rightarrow 2H_2O$ (d) $2Pb(NO_3)_2 \xrightarrow{heat} 2PbO + 4NO_2 +O_2$
Balance the following chemical equations and identify the type of chemical reaction.(a) $Mg(s) + Cl_2 (g) → MgCl_2 (s)$(b) $HgO(s) \xrightarrow{heat} Hg(l) + O_2 (g)$(c) $Na(s) + S(s) \xrightarrow{fused} Na_2S(s)$(d) $TiCl_4 (l) + Mg(s) → Ti(s) + MgCl_2 (s)$(e) $CaO(s) + SiO_2 (s) → CaSiO_3 (s)$(f) $H_2O_2 (l) \xrightarrow{UV} H2O(l) + O_2 (g)$
Complete and balance the following chemical equations: (a) $Zn(s) + HCl(aq) →$ (b) $Na_2CO_3(s) + HCl (aq) →$ (c) $NaHCO_3(s) + 6 HCl →$(d) $NaOH(aq) + HCl(aq) →$(e) $CuO(s) + HCl (aq) →$p>
Identify the solutions among the following mixtures.(a) Soil (b) Seawater(c) Air (d) Coal(e) Soda water.

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements