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实验室用浓盐酸配制250mL0.1mol?L -1 的盐酸溶液 (1)配制250mL0.1mol?L -1 盐酸溶液需要2.0mol?L -1 盐酸的体积为______; (2)要配制上述溶液,需要的仪器除烧杯、玻璃棒外,还有______、______; (3)配制时,其正确的操作顺序是(填序号字母,每个字母只能用一次)______. A.用30mL水洗涤烧杯2-3次,洗涤液均注入容量瓶,振荡 B.用量筒量取所需的浓盐酸,沿玻璃棒倒入烧杯中,再加入少量水(约30mL),用玻璃棒慢慢搅动,使其混合均匀 C.将已冷却的盐酸沿玻璃棒注入250mL的容量瓶中 D.将容量瓶盖紧,振荡,摇匀 E.改用胶头滴管加水,使溶液凹面恰好与刻度相切 F.继续往容量瓶内小心加水,直到液面接近刻度1-2cm处.
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