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Vinvika [58]
3 years ago
12

What would be the effect on the calculated ratio (mole of copper:mole of iron) if:

Chemistry
1 answer:
kotegsom [21]3 years ago
5 0

Explanation:

Since the ratio is Cu/Fe, if some Fe were lost due to spillage, the Cu/Fe ratio would INCREASE because Fe would be lower.

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What is the ph of a solution of 0.550 m k2hpo4, potassium hydrogen phosphate?
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We assume that we have Ka= 4.2x10^-13 (missing in the question)
and when we have this equation:
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and form the Ka equation we can get [H+]:
Ka= [H+] [HPO4-] / [H2PO4] and we have Ka= 4.2x10^-13 & [H2PO4-] = 0.55m
by substitution:
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PH= -㏒[H+]
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