Bacl2(aq) + na2so4(aq) ⇄ 2nacl(aq) + baso4(s)
consider the chemical reaction represented above. what will be the resulting change if more barium chloride is added to the system?
a) there will be no change.
b) the equilibrium will change in both directions.
c) the equilibrium will shift to the left and the precipitate will dissolve.
d) the equilibrium will shift to the right and more precipitate will be formed.

D) The equilibrium will shift to the right and more precipitate will be formed.

Explanation:

BaCl₂(aq) + Na₂SO₄(aq) ⇄ 2NaCl(aq) + BaSO₄(s)↓,

Adding more BaCl₂ to the system:

will increase the concentration of BaCl₂ (reactants), so the equilibrium will be shifted to the right side (products side) to suppress the effect of increasing the BaCl₂.

D) The equilibrium will shift to the right and more precipitate will be formed.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.