Question

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Answer 1

1. 4K + O2 --> 2K2O
2. P4 + 5O2 --> 2P2O5
3. 2KNO3 --> 2KNO2 + O2
4. 2NaCl + MgO --> Na2O + MgCl2
5. Na2S + H2So4 --> Na2So4 + H2S
6. CaO + H2O --> Ca(OH)2
7. 2Pb(No3)2 --> 2PbO + 4No2 + O2
8. H2S + Cl2 --> 2HCl + S
9. C12H22O11 --> 12C + 11 H2O
10. CO2 + C --> 2CO

Answer 2

Answer:

Part 1→

$\rm\red{K+O_2\xrightarrow{~}\underline{K_2O}}$

Balanced Form:-

$\bf\blue{2K+O_2\xrightarrow{~}\underline{2K_2O}\checkmark}$

Part 2→

$\rm\red{P_4+O_2\xrightarrow{~}\underline{P_2O_5}}$

Balanced Form:-

$\bf\blue{P_4+5O_2\xrightarrow{~}\underline{2P_2O_5}\checkmark}$

Part 3→

$\rm\red{KNO_3\xrightarrow{Heat}\underline{KNO_2}+O_2}$

Balanced Form:-

$\bf\blue{2KNO_3\xrightarrow{Heat}\underline{2KNO_2}+O_2\checkmark}$

Part 4→

$\rm\red{NaCl+\underline{MgO}\xrightarrow{~}Na_2O+MgCl_2}$

Balanced Form:-

$\bf\blue{2NaCl+\underline{MgO}\xrightarrow{~}Na_2O+MgCl_2\checkmark}$

Part 5→

$\rm\red{ \underline{Na_2S}+H_2SO_4\xrightarrow{~}Na_2SO_4+H_2S\uparrow}$

Balanced Form:-

$\bf\blue{ \underline{Na_2S}+H_2SO_4\xrightarrow{~}Na_2SO_4+H_2S\uparrow\checkmark}$

Part 6→

$\rm\red{CaO+H_2O\xrightarrow{~}\underline{Ca\big(OH\big)_2}}$

Balanced Form:-

$\bf\blue{CaO+H_2O\xrightarrow{~}\underline{Ca\big(OH\big)_2}\checkmark}$

Part 7→

$\rm\red{Pb\big(NO_3)_2\xrightarrow{Heat}\underline{PbO}+NO_2+\underline{O_2}}$

Balanced Form:-

$\bf\blue{2Pb\big(NO_3)_2\xrightarrow{Heat}\underline{2PbO}+4NO_2+\underline{O_2}\checkmark}$

Part 8→

$\rm\red{H_2S+Cl_2\xrightarrow{~}\underline{HCl}+\underline{S}}$

Balanced Form:-

$\bf\blue{H_2S+Cl_2\xrightarrow{~}\underline{2HCl}+\underline{S}\checkmark}$

Part 9→

$\rm\red{C_{12}H_{22}O_{11}\xrightarrow{Heat}\underline{C}+H_2O}$

Balanced Form:-

$\bf\blue{C_{12}H_{22}O_{11}\xrightarrow{Heat}\underline{12C}+11H_2O\checkmark}$

Part 10→

$\rm\red{CO_2+C\xrightarrow{~}\underline{CO}}$

Balanced Form

$\bf\blue{CO_2+C\xrightarrow{~}\underline{2CO}\checkmark}$

HOPE IT HELPS.