Hòa tan 16gam NaOH vào dd H2SO4 9,8% (vừa đủ ) a)Viết PTHH b)Tính khối lượng dd H2SO4 đã PƯ c). Tính C% của dd thu được sau pư (Cho biết: Na = 23; C = 12; O = 16; H = 1; S= 32)

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