Determine the reactants for this synthesis reaction based on its product.

Move the reactants into the synthesis reaction.

Balanced Synthesis Reaction: 2\ ^ blank + blank \ ^ (N*H_{4}) 2 SO 4

N*H_{3}

N_{2}*H_{4}

S*O_{4}

N_{2}*H_{8}

H_{2}*S*O_{4}

1 answer

To determine the reactants for the given synthesis reaction, we start with the balanced synthesis reaction:

\[ 2 ; ___ + ___ ; \rightarrow ; (N_2H_4) ; \cdot ; 2SO_4 \]

Given the product \( N_2H_4 \) (hydrazine) and \( SO_4 \) (sulfate), we need to identify which reactants lead to this synthesis reaction.

Looking at the given reactants:

  1. \( N_2H_4 \) (hydrazine)
  2. \( H_2SO_4 \) (sulfuric acid)
  3. \( N_3 \) (ammonia)
  4. \( N_2H_8 \) (not a common molecule)
  5. \( SO_4 \) (sulfate ion, needs to be with a cation)

In order to produce \( N_2H_4 \) and sulfate \( SO_4 \), the likely reactants would be:

  • Two molecules of hydrazine: \( N_2H_4 \)
  • One molecule of sulfuric acid: \( H_2SO_4 \)

Thus, the balanced synthesis reaction could be shown as:

\[ 2 ; N_2H_4 + H_2SO_4 ; \rightarrow ; (N_2H_4)\cdot 2SO_4 \]

Based on this, the filled-in balanced synthesis reaction would look like:

Final Answer: \[ 2 ; N_2H_4 + H_2SO_4 ; \rightarrow ; (N_2H_4) \cdot 2SO_4 \]