Chemistry
State the terms defined by the following sentences:
(a) A soluble base
(b) The insoluble solid formed when two solution are mixed together.
(c) An acidic solution in which there is only partial ionization of the solute molecules.
Acids Bases Salts
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Answer
(a) Alkali
(b) Precipitate
(c) Weak acid
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Related Questions
From the formula listed below, choose one, in each case, corresponding to the salt having the given description :
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O
(a) an acid salt.
(b) an insoluble chloride.
(c) on treating with concentrated sulphuric acid, this salt changes from blue to white.
(d) on heating, this salt changes from green to black.
(e) this salt gives nitrogen dioxide on heating.
(a) Ca(H2PO4)2 is an example of compound called …………… (acid salt / basic salt / normal salt).
(b) Write the balanced equation for the reaction of :
A named acid and a named alkali.Which of the following methods A, B, C, D or E is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
A Action of an acid on a metal B Action of an acid on an oxide or carbonate C Direct combination D Neutralization of an alkali by an acid E Precipitation (double decomposition) (i) Copper (II) chloride (ii) Iron (II) chloride (iii) Iron (III) chloride (iv) Lead (II) chloride (v) Sodium chloride Choose the most appropriate answer from
[SO2, SiO2, Al2O3, CO, MgO, Na2O]
(a) A covalent oxide of a metalloid
(b) An oxide which when dissolved in water form acid.
(c) A basic oxide
(d) An amphoteric oxide