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10-03-2022
Chemistry

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Read the passage.

Water can react with hydrochloric acid (a strong acid) to form hydronium and chlorine ions. In this case, water acts as a base. Water also reacts with ammonia (a strong base) to form ammonium and hydroxide ions. In this case, water acts as an acid.

Which option correctly describes the reason for this phenomenon?

1. Water is a neutral compound. It can act as a base when coupled with a strong acid, or as an acid when coupled with a strong base.

2.Every substance can act as a base or an acid depending on the reaction they partake in. This property of substances is called amphotericity.
3. Water acts as a conjugate acid when coupled with a strong acid, or as a conjugate base when coupled with a strong base.
4. Water is an amphoteric compound. It can act as a base when coupled with a strong acid, or as an acid when coupled with a strong base.

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10-03-2022

1. How do the different stages of development affect a person’s ability to react to situations? Explain briefly.

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