The alkali metals react with the halogens to form ionic metal halides. What mass of potassium...
The alkali metals react with the halogens to form ionic metal halides. What mass of potassium chloride forms when 5.11 L of chlorine gas at 0.943 atm and 286 K reacts with 29.0 g potassium?
Homework Answers
Answer:
2 K + Cl2 >> 2 KCl
Moles of Cl2= PV/RT (Ideal gas law)
Given for Cl2 gas P=0.943 atm, V=5.11 L, R=0.082 L.atm.K-1 and
T= 286 K.
Moles Cl2 = 5.11*0.943/ 0.0821 x 286 =0.205
Moles KCl = 0.205x 2 =0.410 mol KCl
Mass KCl = 0.410 mol x 74.55 g/mol =30.63 g.
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