It's important to match your exercise shoes with the type of exercise
in which you will be participating. This is to avoid muscle cramps and strains
when you are moving. It also provides room for movement for your feet as it
will move around a lot.
Answer:
The correct answer is because distilled water has a neutral pH=7.
Explanation:
Distilled water has a neutral pH of 7, which means that water is neither an acid nor a base. Vinegar is a dilute acid that can be further diluted with water, or it can be neutralized using a base. The term "pH" means "hydrogen potential", the more hydrogen-free ions in flotation in a solution, the more acidic it will be.
The pH of vinegar will always be kept at a lower than neutral number, no matter how diluted, because vinegar is an acid.
By adding distilled water (pH = 7) to the vinegar, it does not increase the amount of H+ in the solution, so it does not affect the pH of the vinegar.
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<h3>Chemical reaction formula</h3>
Be2+ + S2- -> BeS
<h3>Product formula : BeS</h3>