
CONTOH SOAL
Presentation
•
Chemistry
•
12th Grade
•
Hard
Dani Lahat
FREE Resource
2 Slides • 0 Questions
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CONTOH SOAL -SOAL PERHITUNGAN KONSENTRASI LARUTAN
By : RACHMADANI
2
CONTOH SOAL 1
Sebanyak 18 gram C6H12O6(Mr = 180) dilarutkan kedalam air sehingga volumenya menjadi 500mL. Tentukan molaritas larutan yang terjadi ? Pembahasan Mr = 180 gr = 18 gram V = 500 mL = 0,5 L
Cara Pertama
M = gr / Mr x 1000/V
M = 18/180 x 1000/500 = 0,2 mol/L
Cara Kedua
M = n / V
Cari nilai n (Jumlah mol zat terlarut) terlebih dahulu: n = m /Mr = 18/ 180 = 0,1 mol Lalu ubah Volume dari miliLiter ke Liter : V = 500 mL = 0,5 L Kemudian masukkan ke rumus : M = n /V ⇔ M = 0,1/ 0,5 = 0,2 mol/L
CONTOH SOAL -SOAL PERHITUNGAN KONSENTRASI LARUTAN
By : RACHMADANI
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