(2) 7 (4) 4
The given formula MgSO₄•7H₂O contains 11 oxygen atoms. Therefore, option (1) is correct.
A chemical formula of a compound describes the chemical proportions of each element in a chemical compound or molecule. The chemical formula of a molecule can be written with help of the chemical symbols of elements, numbers (subscripts), and some other symbols, such as brackets, dashes, plus (+) and minus (−) signs, and commas.
A chemical formula contains no words but contains certain simple chemical structures but not complete structures. These formulae must be limited in power than chemical names and structural formulae.
We have two types of formulas in chemistry one empirical formula and the other molecular formula. In the formula MgSO₄•7H₂O, the four oxygen atoms in MgSO₄ and seven from 7 water molcules.
The number of oxygen atoms in the given formula MgSO₄•7H₂O is equal to (4 + 7) = 11 atoms.
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Answer: The reaction must proceed in the reverse direction.
Explanation:
is the constant of a certain reaction at equilibrium while is the quotient of activities of products and reactants at any stage other than equilibrium of a reaction.
For the given chemical reaction:
The expression of for above equation follows:
We are given:
There are 3 conditions:
When ; the reaction is product favored.
When ; the reaction is reactant favored.
When ; the reaction is in equilibrium.
As, , the reaction will be favoring reactant side or the reaction must proceed in the reverse direction.
Hence, the reaction must proceed in the reverse direction.
b. explosion
c. Evaporation
d. rotting of food ***