Chem 2 Chapter 18 MHS

Which of the following shows the correct dissolution reaction for BaCl₂?

• Ba ²⁺(aq) + Cl₂^-(aq) -> BaCl₂(s)
• BaCl₂(aq) -> Ba ²⁺(aq) + 2Cl^-(aq)
•  BaCl₂(s) -> Ba ²⁺(aq) + 2Cl^-(aq)
• Ba ²⁺(aq) + 2Cl^-(aq) -> BaCl₂(s)

Tags

NGSS.HS-PS1-2

Does a precipitate form when 0.050 L of 2.0x10^-2M Pb(NO₃)₂ is mixed with 0.010 L of 1.0x10^-2M Na₂SO₄? (PbSO₄ has a Ksp = 3 x 10^-28)

• Yes Q_sp = 2.84x10^-5

• No Q_sp = 2.84x10^-35

• Yes Q_sp = 3.14x10^-5

• No Q_sp = 3.14x10^-35

if K_sp < Q_sp then

• no precipitate will form

• precipitate will form

• the reaction will not occur

• the reaction will remain saturated

1. The solubility product expression for tin(II) hydroxide, Sn(OH)₂, is

• (a) [Sn²⁺][OH^-]

• (b) [Sn²⁺]²[OH^-]

• (c) [Sn²⁺][OH^-]²

• (d) [Sn²⁺]³[OH^-]

• (e) [Sn²⁺][OH^-]³

The equation representing the equilibrium in a saturated solution of CaSO₄ is

• A. CaSO_4(s) ⇄ Ca²⁺_(aq) + SO₄^2-_(aq)

• B. CaSO_4(s) ⇄ Ca²⁺_(aq) + S^2-_{(aq) +} 4O^2-_(aq)

• C. CaSO_4(s) + H₂O_(l) ⇄ CaO_(aq) + H₂SO_4(aq)

• D. CaSO_4(s) + 2H₂O_(l) ⇄ Ca(OH)_2(aq) + H₂SO_4(aq)

2SO₂(g)+O₂(g)⇌2SO₃(g)
Removing O₂(g) will

• shift equilibrium right
• shift equilibrium left
• decrease temperature
• have no change

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-5

For the reaction...
H_{2 (g)}  + Cl_{2 (g)} <−>  2HCl _(g)  +  heat
If the pressure in the system is increased, the equilibrium will _______.

• shift left
• shift right
• not shift

9kJ+2SO₂+O₂↔2SO₃ 
If pressure decreases?

• Shift Right
• Shift Left
• No Change
• Shift both left and right

For the reaction...
SO_2(g) + O_2(g) <−>  SO_3(g)
If the equilibrium shifts to the right, the concentration of O_2(g) will ___________.

• increase
• decrease
• remain the same

Tags

NGSS.HS-PS1-6

For the reaction...
energy +  N_2(g)  +  O_2(g)  <−>  2NO_(g)
If  O_2(g) is removed, the  concentration of N₂ will _______.

• increase
• decrease
• remain the same
• double

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-5