Question

Which of the following is NOT isoelectronic with Argon (Ar)

	a.	P3-
	b.	K+
	c.	Si4+
	d.	Ca+2

Which of the following changes would most likely increase the rate of a reaction?

	a.	decreasing the concentration of a reactant
	b.	increasing the size of the reactant particles
	c.	decreasing the reaction temperature
	d.	decreasing the activation energy for the reaction

The correct name for the ionic compound Hg₂S is __________

	a.	Mercury (II) Sulfite
	b.	Mercury (I) Sulfide
	c.	Mercury Sulfide
	d.	Mercury (I) Sulfate

Answer 1

1)c

2)d

3) b

Explanation:

1)ionic species isoelectronic with argon are:

p​​​​​^{​​​​​3-}

^​​​​​​​​​K⁺ and Ca ²⁺

2) inorder to increase the rate of reaction,

• Increase in temperature increases the rate of reaction.

• Increase in the concentration of reactants increases the rate of reaction.

• When particle size is smaller, surface area increases and rate of reaction increases.

• Lowering the activation energy increases the rate of reaction.

Hope it Helps!!

Thanks..