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Balance the following equations: (a) Fe + CuSO4 -> .... + .... (b) MnO2 + HCl -> .... + H2O + .... Write the reaction for thermal decomposition of Lead nitrate and names of products formed.
Chemistry
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Step-by-step solution
12 steps5(ii)(a)
Write the unbalanced equation.
Check atoms on both sides.
Left: Fe = 1, Cu = 1, S = 1, O = 4
Right: Fe = 1, Cu = 1, S = 1, O = 4Balanced as is.
Balanced equation:
Fe + CuSO_4 \to FeSO_4 + Cu
5(ii)(b)
Write the unbalanced equation.
Balance Mn
coefficient 1 on both (already).
Balance O
2 on left, so 2 H₂O on right.
Balance H
4 on right (from 2H₂O), so 4 HCl on left.
Balance Cl
4 on left, 2 from MnCl₂ + 2 from Cl₂ = 4 on right.
Balanced equation:
MnO_2 + 4HCl \to MnCl_2 + Cl_2 + 2H_2O
6(i)
Thermal decomposition of lead nitrate.
Unbalanced:
Balance Pb
2 on left, so 2 PbO on right.
N: 4 on left, 4 NO₂ on right.
O: left 12, right 2(1) + 4(2) + 2(1)/2 wait, O₂ is 2O.
Right: 2PbO=2O, 4NO₂=8O, O₂=2O total 12O. Balanced.
IUPAC names of products:
lead(II) oxide, nitrogen dioxide, dioxygenReaction:
2Pb(NO_3)_2 ->[Δ] 2PbO + 4NO_2 + O_2
6(ii)(a)
Identify structure
CH₃-CH₂-CHO (three carbons, aldehyde).
IUPAC name: propanal
propanal
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