It may also be obtained by heating carbon, sulphur and many metals with concentrated sulphuric acid: C + 2H 2 SO 4 = 2SO 2 }- CO 2 + 2H 2 O; S + 2H 2 SO 4 = 3S0 2 + 2H 2 0; Cu + 2H 2 SO 4 = SO 2 -fCuSO 4 + 2H 2 0; and by decomposing a sulphite, a thiosulphate or a thionic acid with a dilute mineral acid. [Please select]
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Among the better known agents which have such an effect upon latex, formalin and sodium sulphite (not bisulphite) are the chief. [Please select]
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As now used, it is in the form of an easily soluble powder (anhydrous sodium sulphite). [Please select]
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Paper made from the pulps of sulphite and sulphate processes is capable of yielding a very soluble pyroxyline. [Please select]
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Talent and genius, reason and intuition, bromide and sulphite are some of the names we know them by. [Please select]
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_ (_a_) Dissolve anhydrous sodium sulphite in water at the rate of 1 pound to 3 gallons. [Please select]
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In any case, sodium sulphite gives the results desired for sheet rubber (see following). [Please select]
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