Chemical CalculationsD. Van Nostrand Company, 1923 - 276 páginas |
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Página 33
Raymond Harman Ashley. 27. Oxygen is prepared from potassium chlorate according to the equation : 2KCIO3 2KCl + 302 . = ( a ) What is the yield of oxygen when 7.0680 g . of potassium ... permanganate ? Ans . 2.0053 g . 33. If the formula of ...
Raymond Harman Ashley. 27. Oxygen is prepared from potassium chlorate according to the equation : 2KCIO3 2KCl + 302 . = ( a ) What is the yield of oxygen when 7.0680 g . of potassium ... permanganate ? Ans . 2.0053 g . 33. If the formula of ...
Página 36
... potassium permanganate ( KMnO1 ) ? ( b ) If contaminated to an extent of 2.00 % of impurities ? Ans . ( a ) 34.76 % ( b ) 34.06 % 55. Dolomite is a double carbonate of calcium and magnesium which may in some cases be represented by ...
... potassium permanganate ( KMnO1 ) ? ( b ) If contaminated to an extent of 2.00 % of impurities ? Ans . ( a ) 34.76 % ( b ) 34.06 % 55. Dolomite is a double carbonate of calcium and magnesium which may in some cases be represented by ...
Página 40
... potassium permanganate ? ( b ) Iron ? Ans . ( a ) 2.4032 g . ( b ) 0.8834 g . 73. Ferrous sulphate reacts with potassium permanganate accord- ing to the equation 10FeSO4 + 2KMnO4 + 8H2SO4 = 5Fe2 ( SO4 ) 3 + K2SO4 + 2MnSO4 + 8H2O and it ...
... potassium permanganate ? ( b ) Iron ? Ans . ( a ) 2.4032 g . ( b ) 0.8834 g . 73. Ferrous sulphate reacts with potassium permanganate accord- ing to the equation 10FeSO4 + 2KMnO4 + 8H2SO4 = 5Fe2 ( SO4 ) 3 + K2SO4 + 2MnSO4 + 8H2O and it ...
Página 201
... Potassium permanganate is a reagent used in a number of different volumetric determinations . Its value depends upon its oxidizing property . Iron is determined by it according to the equation 2KMnO4 + 10FeSO4 + 8H2SO4 = K2SO4 + 2MnSO4 ...
... Potassium permanganate is a reagent used in a number of different volumetric determinations . Its value depends upon its oxidizing property . Iron is determined by it according to the equation 2KMnO4 + 10FeSO4 + 8H2SO4 = K2SO4 + 2MnSO4 ...
Página 202
... potassium permanganate solution represents 0.001 g . of iron , then as 2KMnO4 = 10Fe , and 2KMnO4 = 5H2C2O4 , it follows that 5H2C2O4 = 10Fe : the amount of oxalic acid equivalent to one cubic centimeter of this permanganate solution is ...
... potassium permanganate solution represents 0.001 g . of iron , then as 2KMnO4 = 10Fe , and 2KMnO4 = 5H2C2O4 , it follows that 5H2C2O4 = 10Fe : the amount of oxalic acid equivalent to one cubic centimeter of this permanganate solution is ...
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Términos y frases comunes
2HCl 2KCl acetic acid added AgBr AgCl amount analysis analyzed anhydride aqueous vapor arsenic atomic weight BaCl2 barium sulphate barometer boiling point bromine CaCO3 Calculate the percentage Calories carbon dioxide Chem chemical compound contains corresponding cubic centimeter decimal point degrees Baumé determined element equation equivalent error factor flask formula freezing point gases given H₂O HNO3 hydrochloric acid hydrogen iodide iodine iron kilogram liquid liter logarithm mercuric oxide mercury meters method mixed acid mixture molecular weight multiplied NaCl NaHCO3 NaOH neutralize nitric acid nitrogen normal solution obtained oleum oxalic oxygen platinum potassium chloride potassium permanganate pounds present pressure problem ratio reaction salt sample significant figures silver chloride sodium carbonate sodium chloride sodium hydroxide sodium sulphate specific gravity specific heat standard conditions substance sulphuric acid Table taken temperature thiosulphate tion titrated unit valence volume
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Página 95 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Página 268 - Baume Hydrometers for use with this table must be graduated by the above formula, which formula should always be printed on the scale. Atomic weights from FW Clarke's table of 1901. О - 16. Allowance for Temperature At 10° -20° Be.— 1/30° Be.
Página 9 - The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Página 106 - (a) Units of Capacity. — The liter, defined as the volume occupied by a quantity of pure water at 4° C. having a mass of 1...
Página 269 - Soc., vol. 57, p. 363. AUTHORITIES — WC FERGUSON; HP TALBOT. This table has been approved and adopted as a standard by the Manufacturing Chemists' Association of the United States.
Página 88 - Marriott, so named after its discoverers, is that the volume of a gas varies inversely as the pressure to which it is subjected.
Página 140 - The atomic weight (also known as the combining weight) of an element is the ratio of the weight of an atom of that element to the weight of an atom of hydrogen. Hydrogen...
Página 58 - Thus, the reduction of the value of the modulus between the melting point of ice and the boiling point of water is...