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What chemical expirements did James Watt study?
James Watt passed the chlorine into a weak solution of alkali, and obtained a turbid solution that appeared to have good bleaching properties
was there a significant discovery when James Watt witnessed Berthollet's experiment reacted Hydrocloric acid with manganese dioxide?
the experiment James Watt witnessed produced chlorine

Question: How did James Watt expand upon the discovery of the bleach solution?
Self-contained rewrite: How did James Watt expand upon the discovery of the bleach solution after wtinessing Berthollet's experiment reacted Hydrocloric acid with manganese dioxide producing chlorine?