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AVprozaik [17]
2 years ago
14

How many moles of oxygen are required to make 4 moles of water?​

Chemistry
2 answers:
kakasveta [241]2 years ago
8 0

Answer:

2 moles of oxygen

Explanation:

Basic Equation (given) :

2H₂ (g) + O₂ ⇒ 2H₂O (g)

  • From this, we understand for every 2 moles of water, 1 mole of oxygen is needed

Taking the number of moles of oxygen and water in proportion :

  • 1 : 2
  • 1 × 2 : 2 × 2
  • 2 : 4

Therefore, 2 moles of oxygen are required to make 4 moles of water.

frozen [14]2 years ago
6 0

\textsf{\qquad\qquad\huge\underline{{\sf Answer}}}

As per the given equation, we can infer that :

For getting 2 moles mole of water, 1 mole of oxygen gas was required. so to get 4 moles of water we need :

We just have to multiply the whole reaction by 2 on both sides, in order to get 4 moles of H2O on product side.

\qquad \qquad \rm4 \: H_2 + 2 \: O_2  \rightarrow4 \: H_2O

therefore, we need

\qquad \sf  \dashrightarrow \: 2 \times 1 = 2 \: moles \:  \: oxygen \: gas

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For a titration of 25 ml of naoh solution, 23.30 ml of hcl solution if used. what is the molarity of naoh
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<span>HCl<span>(aq)</span>+NaOH<span>(aq)</span>→NaCl<span>(aq)</span>+<span>H2</span>O<span>(l)</span></span>

As you can see here, one mole of acid neutralizes one mole of base.

We use the concentration equation, which states that,

<span>c=<span>nv</span></span>

<span> <span> <span> n is the number of moles </span> <span> v is the volume of solution </span> </span> </span>

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<span>n=c⋅v</span>

So, we have:

<span><span>n<span>NaOH</span></span>=0.1 M⋅0.05 L</span>

<span>=0.005 mol</span>

Since one mole of acid neutralizes one mole of base, then we must have: <span><span>n<span>HCl</span></span>=<span>n<span>NaOH</span></span></span>.

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<span><span>c<span>HCl</span></span>=<span><span>n<span>HCl</span></span><span>v<span>HCl</span></span></span></span>

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<span>≈0.17 <span>M</span></span>

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3 years ago
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