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DIA [1.3K]
4 years ago
6

How does the bleaching process remove stains from fabric? A. The OCL- ions oxidize the stain B. The fabric oxidizes the NaOCl C.

The fabric reduces the NaO D. The NaOCL reduces the stain
Chemistry
2 answers:
MrRa [10]4 years ago
8 0

Answer:

The correct answer is option A.

Explanation:

Sodium hypochlorite is a strong oxidizing agent composed of 1 sodium , 1 oxygen  and 1 chlorine atom.It bleaching action can be explained as due to release of nascent oxygen which oxidizes the stain and results in removal of stain from the fabrics.

NaOCl+H_2O \rightarrow NaOH+HOCl

2OCl^-\rightarrow Cl_2+2[O]

So, we can say that hypochlorite ion oxidizes the stain on fabric.

MaRussiya [10]4 years ago
4 0
The answer is A. The Hypochlorate ions oxidize the chromophores, which cause color, in the stain.
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3 years ago
A balloon contains 8.4 L of helium gas at STP. How many moles of helium are in the balloon? 0.38 moles He ,190 moles He ,2.1 mol
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2 years ago
If 27.9 grams of calcium carbonate reacts with excess HCl, how many moles of calcium chloride are produced
Virty [35]

Answer:

\large \boxed{\text{0.2797 mol}}

Explanation:

We must do the conversions:

mass of CaCO₃ ⟶ moles of CaCO₃ ⟶ moles of CaCl₂

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:     100.09                  110.98

         CaCO₃ + 2HCl ⟶ CaCl₂ + CO₂ + 2HCl

m/g:     27.9

(a) Moles of CaCO₃\text{Moles of CaCO}_{3} = \text{27.9 g CaCO}_{3}\times \dfrac{\text{1 mol CaCO}_{3}}{\text{100.09 g CaCO}_{3}}= \text{0.2787 mol CaCO}_{3}

(b) Moles of CaCl₂\text{Moles of CaCl}_{2} =\text{0.2787 mol CaCO}_{3} \times \dfrac{\text{1mol CaCl}_{2}}{\text{1 mol CaCO}_{3}} = \text{0.279 mol CaCl}_{2}\text{The reaction produces $\large \boxed{\textbf{0.279 mol}}$ of CaCl}_{2}

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4 years ago
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