Chemistry, 14.10.2019 19:00 jalenjoseph7527

Identify the missing coefficient in the balanced equation and classify the type of reaction.
casn2 + 6h20 _ca(oh)2 + 2nh3
4: single displacement
3. single displacement
4: double displacement
3; double displacement

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Answer from: asamuels216

3; Double Displacement

Explanation:

Balancing is making the number of atoms of each element same on both the sides (reactant and product side).

To find the number of atoms of each element we multiply coefficient and the subscript

For example 5Ca_1Cl_2 contains

5 × 1 = 5 ,Ca atoms and

5 × 2 = 10, Cl atoms

If there is a bracket in the chemical formula

For example 3Ca_3 (P_1 O_4 )_2 we multiply coefficient × subscript × number outside the bracket to find the number of atoms

(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

3 × 3 = 9 , Ca atoms

3 × 1 × 2 = 6, P atoms

3 × 4 × 2 = 24, O atoms are present

Let us balance the equation given

Ca_3 N_2+6H_2 0Ca(OH)_2+2NH_3

(UNBALANCED)

Reactant side Number of atoms or groups Product side

of each element

3 Ca 1

2 N 2

12 H 8

6 O 2

Multiplying Ca(OH)_2 on the right side by 3, we will have

Ca_3 N_2+6H_2 03Ca(OH)_2+2NH_3

Reactant side Number of atoms or groups Product side

of each element

3 Ca 3

2 N 2

12 H 12

6 O 6

Balanced

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Identify the missing coefficient in the balanced equation and classify the type of reaction.
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