Find the coefficients for these reactions: 1. NH_3 + NO_2 + H_2O H_2S_nCI_6 + H_

Question

Find the coefficients for these reactions: 1. NH_3 + NO_2 + H_2O H_2S_nCI_6 + H_2S rightarrow S_nS_2 + HCI Fe_2(CO_3)_3 HCI rightarrow F_eCI_3 + CO_2 + H_2O KCIO_3 rightarrow KCI + O_2 C_2H_6(g) + O_2(g) rightarrow CO_2(g) + H_2O Ca_3(PO_4)_2 + C rightarrow Ca_3P_2 + CO Nb_2O_5 + CCI_4 rightarrow NbCI_5 + COCI_2 Write a balanced equation for each reaction: Zinc reacts with chlorine gas and forms zinc chloride. Lead (II) sulfide reacts with oxygen gas to yield lead (II) oxide and sulfur dioxide. Solid calcium hydroxide reacts with aqueous nitric acid (HNO_3), producing aqueous calcium nitrate and water.

Explanation / Answer

The number of atoms of each element must be the same on left and right hand side of equation.

We may only add balancing numbers in front in order to achieve this.

1) 4NH3 + 7O2 ----> 4NO2 + 6H2O

2) H2SnCl6 + 2 H2S = SnS2 + 6 HCl

3) Fe2(CO3)3 + 6 HCl = 3 CO2 + 2 FeCl3 + 3 H2O

4) 2KClO3---> 2KCl + 3O2

5) 2C2H6 + 7O2 ----> 4CO2 + 6H2O

6) Ca3(PO4)2 + 8 C ---> Ca3P2 + 8 CO

7) Nb2O5 + 5CCl4 ----> 2NbCl5 + COCl2

8) Zn + Cl2 -----> ZnCl2

9) PbS + O2 --> Pb + SO2

10) 2 HNO3 + Ca(OH)2 --> Ca(NO3)2 + 2 H2O

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