Complete the missing components/variables given as X and Y in the following.(a) Pb(NO3)2 (aq)+ 2Kl(aq) Pbl2 (X) + 2KNO3 (Y)(b) Cu(s)+2AgNO3 (aq) Cu(NO3)2 (aq)+X(s)(c) Zn(s) +H2SO4(aq)ZnSO4 (x) + H2(y)(d) CaCO3(s) CaO(s)+CO2(g)

(a) Pb(NO3)2 (aq)+2KI(aq) PbI2(s)+2KNO3(aq)(b) Cu(s)+2AgNO3 (aq) Cu(NO3)2 (aq)+ 2Ag(s)(c) Zn(s) + H2SO4(aq) ZnSO4(aq)+H2(g)(d) CaCO3 (s) CaO(s)+ CO2 (g)

Q. 214.3( 27 Votes )

Complete the missing components/variables given as X and Y in the following.

(a) Pb(NO₃)₂ (aq)+ 2Kl(aq) Pbl₂ (X) + 2KNO₃ (Y)

(b) Cu(s)+2AgNO₃ (aq) Cu(NO₃)₂ (aq)+X(s)

(c) Zn(s) +H₂SO₄(aq)ZnSO₄ (x) + H₂(y)

(d) CaCO₃(s) CaO(s)+CO₂(g)

Class 10th NCERT - Science Exemplar 1. Chemical Reactions and Equations

Answer :

(a) Pb(NO₃)₂ (aq)+2KI(aq) PbI₂(s)+2KNO₃(aq)

(b) Cu(s)+2AgNO₃ (aq) Cu(NO₃)₂ (aq)+ 2Ag(s)

(d) CaCO₃ (s) CaO(s)+ CO₂ (g)

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PREVIOUSWrite the balanced chemical equation for the following reactions and identify the type of reaction in each case.(a) In Thermite reaction, iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.(b) Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride(c) Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.(d) Ethanol is burnt in air to form carbon dioxide, water and releases heat.NEXTWhich among the following changes are exothermic or endothermic in nature?(a) Decomposition of ferrous sulphate(b) Dilution of sulphuric acid(c) Dissolution of sodium hydroxide in water(d) Dissolution of ammonium chloride in water

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