We have heard that acid rain is much, so what about basic rain?

Do you have basic rain or not? The answer will surprise you.

Before we learn about basic rain , we need to know a little about rain as well. Normally, people will consider acidity - base of rainwater based on pH scale. This scale has 14 steps, with low pH, strong acidity, high pH, ​​strong base properties. The middle of the ladder is neutral substances, such as pure water (H ₂ O).

The principle of measuring pH is based on the concentration of two ions, H + (acidic) and OH- (basic).

And we all know that rainwater is not pure water, but a mixture of water and some substances in the air. The nature of rainwater on which side - acid or base, depends on the chemical reaction between water and these substances.

The average pH of rainwater is about 5.6.

CO ₂ is always in the air, making normal rainwater actually mildly acidic due to the reaction of carbonic acid (H ₂ CO ₃ ). The average pH of rainwater is about 5.6 - although it is lower than pure water but it is not at the level of harm.

Apart from the constant amount of carbon dioxide, sometimes our atmosphere also contains other gases such as SO ₂ , SO ₃ , NO, NO ₂ , . which can be dissolved in water to create acid.

The products of this reaction are strong acids (H ₂ SO ₄ , HNO ₃ , .) with the ability to harm plants, land and people. And they are the acid rain that experts often talk about.

Sometimes our atmosphere also contains other gases such as SO ₂ , SO ₃ , NO, NO ₂.

So what about basic rain?

However, in rare cases, some parts of the world have an atmosphere containing CaCO ₃ , NH ₃ or CH ₅ N. They are substances that can increase pH.

In sufficient quantities, they not only neutralize acid in the rain, but also create water-soluble bases. The main result is basic rain - a phenomenon contrary to acid rain.

The atmosphere containing CaCO ₃ , NH ₃ or CH ₅ N will have basic rain instead of acid rain.

In nature, the probability of occurrence of two groups is equally small. However, the group of gases that cause acidity appear more from human polluting activities. Therefore, acid rain occurs frequently and is not too difficult to catch.

In contrast, activities that create basic gas groups can only count on the fingertips, so they are much rarer and understandable.

In addition, because rainwater is inherently slightly acidic due to CO ₂ , the amount of extra gas required to produce acid rain is lower than basic rain. The same amount of rainwater requires only 1 part (H +) to produce acid rain but requires 2.5 parts (OH-) to create basic rain. This is like a tug-of-war game that naturally inherits an acid faction.

This phenomenon is rare but has suggested a solution to counteract the harmful effects of acid rain with the principle that bases neutralize acid, creating water and compounds that are less harmful to human living environment.

Scientists have tried to apply in some places often affected by acid rain and have received quite satisfactory results.