Solutions? 46) Which reaction below is an example of a single replacement reacti

Question

Solutions? 46) Which reaction below is an example of a single replacement reaction? A)2H2(g) + O2 (g) 24.0 (1) B) FeCl, (aq) + 3KOH (aq) Fe(OH), (s) + 3 KCl (aq) C)HS04 (aq) + 2NaOH (aq) Na2SO4 (aq) + 2H20 (1) D) 6HCI (aq) + 2Al (s) 2AICI,(aq) + 3H2 (g) 47) Which reaction below is an example of a precipitation reaction? A) H,Co, (aq) H2O (l) + CO2 (g) B) FeCl, (aq) + 3KOH (aq) Fe(OH), (s) + 3 KCI (aq) C) H,so, (aq) + 2NaOH (aq) Na,so, (aq) + 21120 (1) D) 61 ICI (aq) + 2Al (s) 2AIC, (aq) + 3H2 (g) 48) The net ionic reaction for the balanced equation below is Ba(Noh (aq) + K,so,(aq) 2 KNO3 (aq) + Baso,(s) A) Ba, (aq) +2NO, (aq) Ba( NO.)2 (aq) B) 2K (aq)+So, (aq) K,SO, (aq) C) Ba2 (aq) +504-2(aq) Baso,(s). D) K(aq) + NO,' (aq) KNO3 (aq). , 49) Which expression could represent the concentration of a solution? A) 3.5 g B) 3.5 mL C)3.5 M D) 3.5 mol

Explanation / Answer

(46) The option (D) is an example of single replacement reaction. Here Al replaces the hydrogen gas forming aluminum trichloride.

(47) The option (B) is an example of precipitation reaction. Since the ferric hydroxide is in the solid state, it will pecipitate out in the reaction.

(48) If we write the ionic equation on both sides, barium ion will be insoluble in water but nitrate will be soluble in water. Similarly K ion will be soluble in water but sulfate will not. But potassium and nitrate ions will appear on the product side of the reaction which are soluble in water and regarded as the spectator ions. Hence, the net ionic equation is option (C).

(49) The concentration of a solution is expressed in molarity (M). Hence, the correct option is (C).

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.