The conjugate acid of HPO_4^2+ is: H_3PO_4 H_2PO_4^- PO_4^2+ OH^- none of these

Question

The conjugate acid of HPO_4^2+ is: H_3PO_4 H_2PO_4^- PO_4^2+ OH^- none of these Which is a property of a reaction that has reached equilibrium? The amount of products is greater than the amount of reactants. The amount of products is equal than the amount of reactants. The rate of the forward reaction is greater than the rate of the reverse reaction. The rate of the forward reaction is equal to than the rate of the reverse reaction. In which wil the point of equilibrium shift to the right when the pressure on the system is decreased? C(s) + O_2(g) harr CO_2(g) CaCO_3(s) harr CaO(s) + CO_2(g) 2Mg(s) + O_2(g) harr 2MgO(s) 2H_2(g) + O_2(g) harr 2H_2O(g) Which statement describes characteristics of an exothermic reaction? The sign of H is positive, and the products have less potential energy than the reactants. The sign of H is positive, and the products have more potential energy than the reactants. The sign of H is negative, and the products have less potential energy than the reactants. The sign of H is negative, and the products have more potential energy than the reactants. Consider the following endothermic reaction: H_2(g) + I_2(g) harr 2 HI(g). What will be the result of a sevrese in temperature? The equilibrium will shift to the left and [H_2] will decrease The equilibrium will shift to the right and [HI] will decrease The equilibrium will shift to the right and [HI] will increase The equilibrium will shift to the left and [H_2] will increase

Explanation / Answer

11)
conjugate acid os foemed after accepting H+
conjugate acid here will be:
H2PO4-
Answer: b

12)
This is property of equilibrium
AMound of product can be anything on equilibrium
Answer: D

13)
when pressure is decreased, equilibrium will shift to side where there are more gaseous molecules
Answer: B

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