Question

1.MgO+H2-> 2.H2+Ca-> 3H2+?->HCl

Answer 1

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Answer 2

It seems like you've provided a series of chemical reactions. Let's break it down step by step:

1. MgO + H2 -> ?

This reaction involves magnesium oxide (MgO) and hydrogen gas (H2). This is a redox reaction, and it can potentially result in the formation of magnesium (Mg) and water (H2O):

MgO + H2 -> Mg + H2O

However, this is a simplified version, and the actual reaction may involve specific conditions and stoichiometry.

2. H2 + Ca -> ?

This reaction involves hydrogen gas (H2) and calcium (Ca). This can potentially result in the formation of calcium hydride (CaH2):

H2 + Ca -> CaH2

3. 3H2 + ? -> HCl

This reaction involves hydrogen gas (H2) and hydrochloric acid (HCl). This reaction typically does not occur under normal conditions. To produce HCl, you usually need to react hydrogen with an appropriate chlorine-containing compound. For example, you can react hydrogen gas with chlorine gas (Cl2):

H2 + Cl2 -> 2HCl

So, in the context of the reactions you provided, you would need to find a suitable compound containing chlorine to react with hydrogen gas in order to form hydrochloric acid (HCl).