Question

1. $\ce{cu + agno_{3}}$ $\ce{ag + cu(no_{3})_{2}}$

answer:

1. $\ce{pb(no_{3})_{2} + ki}$ $\ce{pbi_{2} + kno_{3}}$

answer:

1. $\ce{hcl + naoh}$ $\ce{nacl + h_{2}o}$

answer:

1. $\ce{h_{2}so_{4} + naoh}$ $\ce{na_{2}so_{4} + h_{2}o}$

answer:

1. $\ce{c_{3}h_{8} + o_{2}}$ $\ce{co_{2} + h_{2}o}$

answer:

1. $\ce{ch_{4} + o_{2}}$ $\ce{co_{2} + h_{2}o}$

answer:

1. $\ce{c_{2}h_{6} + o_{2}}$ $\ce{co_{2} + h_{2}o}$

answer:

1. $\ce{c_{4}h_{10} + o_{2}}$ $\ce{co_{2} + h_{2}o}$

answer:

1. $\ce{h_{2} + cl_{2}}$ $\ce{hcl}$

answer:

1. $\ce{na + h_{2}o}$ $\ce{naoh + h_{2}}$

answer:

1. $\ce{caco_{3}}$ $\ce{cao + co_{2}}$

answer:

1. $\ce{kclo_{3}}$ $\ce{kcl + o_{2}}$

answer:

1. $\ce{ag_{2}o}$ $\ce{ag + o_{2}}$

answer:

1. $\ce{nh_{3} + o_{2}}$ $\ce{no + h_{2}o}$

answer:

Explanation:

Step1: Balance Cu + AgNO₃

Balance Ag, then NO₃⁻:
$\text{Cu} + 2\text{AgNO}_3
ightarrow 2\text{Ag} + \text{Cu(NO}_3\text{)}_2$

Step2: Balance Pb(NO₃)₂ + KI

Balance I, then K/NO₃⁻:
$\text{Pb(NO}_3\text{)}_2 + 2\text{KI}
ightarrow \text{PbI}_2 + 2\text{KNO}_3$

Step3: Balance HCl + NaOH

Atoms are balanced, check:
$\text{HCl} + \text{NaOH}
ightarrow \text{NaCl} + \text{H}_2\text{O}$

Step4: Balance H₂SO₄ + NaOH

Balance Na, then H/O:
$\text{H}_2\text{SO}_4 + 2\text{NaOH}
ightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O}$

Step5: Balance C₃H₈ + O₂

Balance C, H, then O:
$\text{C}_3\text{H}_8 + 5\text{O}_2
ightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}$

Step6: Balance CH₄ + O₂

Balance C, H, then O:
$\text{CH}_4 + 2\text{O}_2
ightarrow \text{CO}_2 + 2\text{H}_2\text{O}$

Step7: Balance C₂H₆ + O₂

Balance C, H, then O:
$2\text{C}_2\text{H}_6 + 7\text{O}_2
ightarrow 4\text{CO}_2 + 6\text{H}_2\text{O}$

Step8: Balance C₄H₁₀ + O₂

Balance C, H, then O:
$2\text{C}_4\text{H}_{10} + 13\text{O}_2
ightarrow 8\text{CO}_2 + 10\text{H}_2\text{O}$

Step9: Balance H₂ + Cl₂

Balance Cl, check H:
$\text{H}_2 + \text{Cl}_2
ightarrow 2\text{HCl}$

Step10: Balance Na + H₂O

Balance H, Na, then O:
$2\text{Na} + 2\text{H}_2\text{O}
ightarrow 2\text{NaOH} + \text{H}_2$

Step11: Balance CaCO₃

Atoms are balanced, check:
$\text{CaCO}_3
ightarrow \text{CaO} + \text{CO}_2$

Step12: Balance KClO₃

Balance O, check K/Cl:
$2\text{KClO}_3
ightarrow 2\text{KCl} + 3\text{O}_2$

Step13: Balance Ag₂O

Balance Ag, check O:
$2\text{Ag}_2\text{O}
ightarrow 4\text{Ag} + \text{O}_2$

Step14: Balance NH₃ + O₂

Balance N, H, then O:
$4\text{NH}_3 + 5\text{O}_2
ightarrow 4\text{NO} + 6\text{H}_2\text{O}$

Answer:

1. $\text{Cu} + 2\text{AgNO}_3

ightarrow 2\text{Ag} + \text{Cu(NO}_3\text{)}_2$

1. $\text{Pb(NO}_3\text{)}_2 + 2\text{KI}

ightarrow \text{PbI}_2 + 2\text{KNO}_3$

1. $\text{HCl} + \text{NaOH}

ightarrow \text{NaCl} + \text{H}_2\text{O}$

1. $\text{H}_2\text{SO}_4 + 2\text{NaOH}

ightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O}$

1. $\text{C}_3\text{H}_8 + 5\text{O}_2

ightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}$

1. $\text{CH}_4 + 2\text{O}_2

ightarrow \text{CO}_2 + 2\text{H}_2\text{O}$

1. $2\text{C}_2\text{H}_6 + 7\text{O}_2

ightarrow 4\text{CO}_2 + 6\text{H}_2\text{O}$

1. $2\text{C}_4\text{H}_{10} + 13\text{O}_2

ightarrow 8\text{CO}_2 + 10\text{H}_2\text{O}$

1. $\text{H}_2 + \text{Cl}_2

ightarrow 2\text{HCl}$

1. $2\text{Na} + 2\text{H}_2\text{O}

ightarrow 2\text{NaOH} + \text{H}_2$

1. $\text{CaCO}_3

ightarrow \text{CaO} + \text{CO}_2$

1. $2\text{KClO}_3

ightarrow 2\text{KCl} + 3\text{O}_2$

1. $2\text{Ag}_2\text{O}

ightarrow 4\text{Ag} + \text{O}_2$

1. $4\text{NH}_3 + 5\text{O}_2

ightarrow 4\text{NO} + 6\text{H}_2\text{O}$