Commonly used instruments and basic operations of chemical experiments ppt (newcomer's edition) In the following experiments, the above instruments are correctly selected is ________________. ①Use B to measure 8.80 mL of dilute sulfuric acid ② Separation of ethyl acetate and saturated Na2CO3 solution is commonly used A ③ Dry ammonia gas needs G or H ④ Laboratory production of ethylene needs C ⑤ Crude salt purification needs F and D ⑥ Acid Alkali neutralization titration requires E
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