CHM 111 Unit 7 Quizizz: Chemical Reactions

What is the coefficient for oxygen gas?

_P₄+_O₂ →  _P₂O₃

Tags

NGSS.HS-PS1-7

_BaS + _PtF₂ → _BaF₂ + _PtS

• 1 BaS + 1 PtF₂ → 1 BaF₂ + 1 PtS
• 4 BaS + 2 PtF₂ → 1 BaF₂ +  1 PtS
• 1 BaS + 2 PtF₂→ 2 BaF₂ +  2 PtS
• 1 BaS + 3 PtF₂ →1 BaF₂ +  2 PtS

What is the coefficient for KBr?

_AlBr₃ + _K₂SO₄ → _KBr + _Al₂(SO₄)₃

Tags

NGSS.HS-PS1-7

What would be the formula of the precipitate that forms when Pb(NO₃)₂ (aq) and K₂SO₄ (aq) are mixed?

• K(NO₃)₂

• PbSO₄

• PbK₂

• H₂O

Which of the following pairs of solutions produces a precipitate when combined?

• Cu(NO₃)₂ and NaCl

• Fe(NO₃)₃ and MgCl₂

• Cu(NO₃)₂ and K₂CO₃

• CaCl₂ and NaNO₃

Tags

NGSS.HS-PS1-1

Which type of reaction is:

2 K + MgBr₂ → 2 KBr + Mg

• Synthesis
• Decomposition
• Single Displacement
• Double Displacement

What is the oxidation number of iodine in KIO₃?

Determine the oxidation number of chromate in CrO₄^2-.

In the reaction Zn + 2HCl --> ZnCl₂ + H₂

which element, if any, is oxidized?

• Zinc

• Hydrogen

• Chlorine

• None

Which equation represents a redox reaction?

• NaOH + HNO₃ → NaNO₃ +H₂O

• 2AgNO₃ + Zn → Zn(NO₃)₂ + 2Ag

• 2NaCl + Pb(NO₃)₂ → PbCl₂ + 2NaNO₃

• CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

Tags

NGSS.HS-PS1-7