CC8 acid topic revision

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hydrogen test
To test for hydrogen gas evolved, insert a lighted splint into the test tube. The lighted splint should extinguish with a characteristic "pop" sound. Note that if there is insufficient hydrogen gas, the flame may not be completely extinguished.
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Phenolphthalein
Phenolphthalein stays colorless in acidic solutions and turns pink in alkaline solutions. Sodium hydroxide is a base, so when you add phenolphthalein, the solution turns pink. Other indicators commonly used in the lab are litmus and methyl orange
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word equations
Acid +base --> salt +water, Acid+ metal --> salt +hydrogen, Acid +metal carbonate --> salt + water + carbon dioxide
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soluble salt
add the aqueous solutions together, filter the solution , keep the filtrate , slowly evaporate the filtrate to produce the precipitate the soluble salt
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insoluble salt
add the aqueous solutions together, filter the mixture +keep the residue, rinse the residue with distilled water, leave to dry in oven
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Card 2

Front

Phenolphthalein stays colorless in acidic solutions and turns pink in alkaline solutions. Sodium hydroxide is a base, so when you add phenolphthalein, the solution turns pink. Other indicators commonly used in the lab are litmus and methyl orange

Back

Phenolphthalein

Card 3

Front

Acid +base --> salt +water, Acid+ metal --> salt +hydrogen, Acid +metal carbonate --> salt + water + carbon dioxide

Back

Preview of the back of card 3

Card 4

Front

add the aqueous solutions together, filter the solution , keep the filtrate , slowly evaporate the filtrate to produce the precipitate the soluble salt

Back

Preview of the back of card 4

Card 5

Front

add the aqueous solutions together, filter the mixture +keep the residue, rinse the residue with distilled water, leave to dry in oven

Back

Preview of the back of card 5
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