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40 ml of 0.05M sesqui carbonate is titrated against 0.05MHCL . xml of hcl is used when phenophthelene is the indicator and y ml HCLis used when methyl orange is used as an indicator in two separate titrations.Hence y-x is equal to

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skygirl ·2009-04-05 05:43:38

sodium sesqui carbonate is a double salt of sodium carbonate and sod bicarbonate -> Na2CO3.NaHCO3

with phenolthalein,

Na2CO3.NaHCO3 -----changes to-------------->> NaHCO3.NaHCO3
N FACTOR =1

x= 40 ml

with meth orange,

Na2CO3.NaHCO3 -----changes to-------------->> 3 H2CO3
N FACTOR =3

y =120 ml

so i think ans shud be 80 ml.

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sanjana chintalacheruvu ·2009-04-05 06:30:07

thank u so much

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Basic Integral Calculus Operators Symbols Matrix Cases

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∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

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° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

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