a) The formula of a compound is AB. If the valency of B is 3, what will be the valency of A? b) Baking soda is a white solid and has the formula NaHCO3. How many of each type of atoms are there in it?
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(a)The valency of element A is 3, that is, oxidation state of element A is . The valency of element B is 2, that is, oxidation state of element B is . This means that 2 atoms of A reacts with 3 atoms of B. Therefore, the reaction will be as follows.
(B)Sodium bicarbonate, also commonly known as baking soda, is commonly seen as a white, fine powder and has the chemical formula NaHCO3. It has one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms.
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