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which of the following chemical equations is balanced? a) nh₃ + h₂o → 2…

Question

which of the following chemical equations is balanced? a) nh₃ + h₂o → 2nh₄oh b) 2nacl + h₂so₄ → hcl + naso₄ c) 2na + s → 2nas

Explanation:

Brief Explanations

To determine a balanced chemical equation, we check if the number of each atom is the same on both sides of the equation.

  • Option A: Left side has 1 N, 5 H, 1 O. Right side (2\(NH_4OH\)) has 2 N, 10 H, 2 O. Not balanced.
  • Option B: Left side: 2 Na, 2 Cl, 2 H, 1 S, 4 O. Right side: 1 H, 1 Cl, 1 Na, 1 S, 4 O. Not balanced (and formula errors: HCL should be HCl, \(NaSO_4\) should be \(Na_2SO_4\)).
  • Option C: Wait, actually, the correct formula for sodium sulfide is \(Na_2S\), but if we assume the formula is \(NaS\) (though incorrect in reality), left side: 2 Na, 1 S. Right side: 2 Na, 2 S? No, wait, no—wait, maybe a typo, but among the given options, none are actually balanced, but perhaps there's a mistake in the options. Wait, no, maybe I misread. Wait, option C: 2 Na + S → 2 NaS. Left: 2 Na, 1 S. Right: 2 Na, 2 S? No. Wait, maybe the intended correct one is none, but perhaps the question has a typo. Wait, no, maybe I made a mistake. Wait, let's re - check:

Wait, option A: \(NH_3 + H_2O \to 2NH_4OH\). Left: N:1, H:3 + 2 = 5, O:1. Right: N:2, H:42 + 12 = 10, O:1*2 = 2. Not balanced.

Option B: \(2NaCl + H_2SO_4 \to HCl + NaSO_4\). Left: Na:2, Cl:2, H:2, S:1, O:4. Right: Na:1, Cl:1, H:1, S:1, O:4. Also, formula errors (HCl, \(Na_2SO_4\) is correct).

Option C: \(2Na + S \to 2NaS\). Left: Na:2, S:1. Right: Na:2, S:2. Not balanced.

Wait, maybe there's a mistake in the question. But if we have to choose from the given, perhaps the intended answer is none, but that's not possible. Wait, maybe I misread the options. Wait, option A: maybe it's \(NH_3 + H_2O \to NH_4OH\) (without the 2), then it would be balanced (N:1, H:3 + 2 = 5; right: N:1, H:4 + 1 = 5, O:1). But as written, with 2\(NH_4OH\), it's not. Option B: if it's \(2NaCl + H_2SO_4 \to 2HCl + Na_2SO_4\), then it's balanced. Option C: if it's \(2Na + S \to Na_2S\), then it's balanced. But with the given options, there's an error. However, perhaps the question has a typo, and the intended correct option is none, but since we have to choose, maybe the closest or the one with the least errors. Wait, no, maybe I made a mistake. Wait, let's check again.

Wait, the original question's options:

A) \(NH_3 + H_2O \to 2NH_4OH\)

B) \(2NaCl + H_2SO_4 \to HCL + NaSO_4\)

C) \(2Na + S \to 2NaS\)

All of these are unbalanced (and have formula errors). But maybe the question is from a source with typos. If we assume that in option A, the product is \(NH_4OH\) (without 2), then A would be balanced. If in option B, the products are \(2HCl + Na_2SO_4\), then B would be balanced. If in option C, the product is \(Na_2S\), then C would be balanced. But as per the given options, there's no correct answer. But since this is a multiple - choice question, maybe there's a mistake in the problem statement. However, if we have to choose from the given, perhaps the intended answer is none, but that's not an option. Wait, maybe I misread option C. Wait, 2Na + S → 2NaS. Left: 2 Na, 1 S. Right: 2 Na, 2 S. Not balanced. Option A: 1 N, 5 H, 1 O vs 2 N, 10 H, 2 O. Not balanced. Option B: 2 Na, 2 Cl, 2 H, 1 S, 4 O vs 1 Na, 1 Cl, 1 H, 1 S, 4 O. Not balanced. So, there's an error in the question. But if we have to pick, maybe the question intended different formulas. For example, if option C was \(2Na + S \to Na_2S\), then it's balanced. But with the given, there's no correct option. However, since this is a graded question, maybe there's a typo. Alternatively, maybe I made a mistake.

Wait, another approach: maybe the question has a typo in option B, and it's \(2NaCl + H_2SO_4 \to 2HCl + Na_2SO_4\), which is balan…

Answer:

There is an error in the given options as none of the provided chemical equations are balanced. However, if we assume possible typos:

  • If option B was \(2NaCl + H_2SO_4 \to 2HCl + Na_2SO_4\), it would be balanced.
  • If option C was \(2Na + S \to Na_2S\), it would be balanced.
  • If option A was \(NH_3 + H_2O \to NH_4OH\), it would be balanced.

But based on the given options, no correct answer exists.