Soal No #17 Diketahui kesetimbangan dekomposisi gas HI sebagai berikut : 2HI_((g))leftharpoons H_(2(g))+I_(2(g)) Jika pada awalnya hanya terdapat gas HI dengan tekanan 10 atm, tentukanlah tekanan parsial gas HI pada saat kesetimbangan jika nilai Kp sebesar 0,5625! Pilih Salah Satu Jawaban 2 atm B 1 atm C 4 atm C D 5 atm D E ) 3 atm

**1. Set up an ICE table:**We'll use an ICE (Initial, Change, Equilibrium) table to track the partial pressures of the gases.| Substance | Initial (atm) | Change (atm) | Equilibrium (atm) ||---|---|---|---|| 2HI | 10 | -2x | 10 - 2x || H₂ | 0 | +x | x || I₂ | 0 | +x | x |**2. Write the Kp expression:**The equilibrium constant Kp is given by:Kp = (PH₂ * PI₂) / (PHI)²**3. Substitute equilibrium pressures into the Kp expression:**We are given that Kp = 0.5625. Substituting the equilibrium pressures from the ICE table:0.5625 = (x * x) / (10 - 2x)²**4. Solve for x:**This equation can be solved by taking the square root of both sides:√0.5625 = x / (10 - 2x)0.75 = x / (10 - 2x)Now solve for x:0.75(10 - 2x) = x7.5 - 1.5x = x7.5 = 2.5xx = 3**5. Determine the partial pressure of H₂:**From the ICE table, the equilibrium partial pressure of H₂ is equal to x. Therefore:PH₂ = x = 3 atm**Therefore, the correct answer is E) 3 atm**