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Answers posted by meena.clay6

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answered Jan 11, 2019
Solution : Given mass of glucose $=18\;g$ Mass of solvent = 1000 g Molar mass of glucose = 180 g ...
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answered Jan 11, 2019
Solution : $i_{urea}=iC_{urea}RT_1$--------(1) & $i_{Solution } =iC_{solution } RT_2$--------...
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answered Jan 11, 2019
Solution : We have reaction  : $MnO_4^{-}+8H^{4} +5e^{-} \to mn^{+2} +2H_2O$ as we know $I O_...
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answered Jan 11, 2019
Solution :  Moles of Nacl in 100 g of solution $= \large\frac{11.7}{58.5}$$=0.2$ Similarl...
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answered Jan 11, 2019
Solution : Let 1 mole of the gas is present So 22.4L will be the volume of the mixture . Density...
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answered Jan 11, 2019
Solution : $L_f=30.26\;cal/g$ $w= 0.0802\;g$ $W_{C6H6}=13.03$ $\Delta T_f= 0.490$ $T_f=5.4^{\c...
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answered Jan 11, 2019
Solution : The roasting process removes volatile impurities like $As$ or $Sb$ from the one. The ...
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answered Jan 11, 2019
Solution : $Z= \large\frac{d \times a^3 \times N_A}{M}$ $d= 2.7 \times 10^{-3}\;kgm^{-3}=2.7\;g\;...
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answered Jan 11, 2019
Solution : Alkaline dilute solution of hydrogen peroxide as it helps in removing impurities. B...
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answered Jan 11, 2019
Solution : Applying pythagoras theroem $BC^2=AB^2+AC^2$ $(2R)^2+(R+r)^2+(R+r)^2=2(R+r)^2=> 4...
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answered Jan 11, 2019
For $50\%$ completion, t= 60 min   $k=\large\frac{2.303}{60} \log \frac{a}{ a-x}$  ...
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answered Jan 11, 2019
Solution : We have given that mass = 200 g density = 7.2 g $cm^{-3}$ $N_A=4.12 \times 10^{24}$...
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answered Jan 8, 2019
Solution : Concentration of an acid depends upon the water content whereas the strength of an acid d...
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answered Jan 8, 2019
Solution : A beaker full of acid is added to a beaker full of base. The pH of the base will decrease...
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answered Jan 8, 2019
Solution : To find the $H^{+}$ concentration when the pH is given, We need to use the following for...
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answered Jan 8, 2019
Solution : The unknown substance sould have to be a basic solution. At least more basic than the ini...
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answered Jan 8, 2019
Solution : Acids increase the concentration of hydrogen ion in water
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answered Jan 8, 2019
Solution : the reaction takes place as follows:$HNO_3+NH_4OH \to NH_4NO_3+H_2O$
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answered Jan 8, 2019
Solution :$CuSO_4.5H_20$ is a hydrated salt. An example of acid salt is $NaHCO_3$
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answered Jan 8, 2019
Solution : $CH_3COOH$ and $CH_3OH$ are organic acids, HCl is strong acid and KCl is a salt.
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answered Jan 8, 2019
Solution : calcium hydroxide is commonly referred as slaked lime.
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answered Jan 8, 2019
Solution : A double salt contains both negative or positive ions.
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answered Jan 8, 2019
Solution : Carbonic acid $(H_2CO_3)$ is a weak mineral acid.
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answered Jan 8, 2019
Solution : A strong acid ionizes completely when dissolved in water.
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answered Jan 8, 2019
Solution : $M_1V_1=M_2V_2$$0.2 *V_1=0.1 *40$$V_1=\frac{4}{0.20}=20 mL$
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answered Jan 8, 2019
Solution : The Bronsted-Lowry theory doesn't go against the Arrhenius theory in any way - it just ad...
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answered Jan 8, 2019
Solution : When $H_2SO_4$ is dissolved in water it dissociates to produce ions. The H+ ions react wi...
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answered Jan 8, 2019
Solution : Degree of dissociation, $\alpha = 2.3/100 = 0.023$Concentration of acetic acid, C = 0.002...
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answered Jan 8, 2019
Solution : We know that $[H^+][OH^{-}]1.0 \times 10^{-14}$So , $[OH^{-}]=1.0 *10^{-14}/[H^{+}]=(1*10...
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answered Jan 8, 2019
Solution:Whether a liquid is an acid or base depends on the type of ions in it. If it has a lot of h...
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answered Jan 8, 2019
Solution : Potassium hydroxide is used in many of the same applications as sodium hydroxide. In addi...
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answered Jan 8, 2019
Solution : Calcium hydroxide is the substance that on treatment with chlorine yields bleaching powde...
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answered Jan 8, 2019
Solution : An amphoteric compound is one that can react with both acids and bases.
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answered Jan 8, 2019
Solution : Potassium Hydroxide, commonly called caustic potash with formula KOH, is a caustic compou...
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answered Jan 8, 2019
Solution : Because the pH is defined as the negative of the log of the H+" role="presentation" style...
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answered Jan 8, 2019
Solution : Y turns phenolphthalein colorless which means it is acidic medium. Thus, Y will vanish sm...
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answered Jan 8, 2019
Solution :(a) lower the pH weaker the base
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answered Jan 8, 2019
Solution : Methyl orange is a pH indicator frequently used in titration because of its clear and dis...
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answered Jan 8, 2019
Solution : Antacid tablet, soap and toothpaste are made up of bases.
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answered Jan 8, 2019
Solution : Sulphuric acid ionizes completely when dissolved in water. Hence, it is a strong acid.
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answered Jan 8, 2019
Solution : A strong acid ionizes completely when dissolved in water.
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answered Jan 8, 2019
Solution : Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide...
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answered Jan 8, 2019
Solution :The neutralization that occurs when aqueous solutions of acids and bases are combined resu...
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answered Jan 8, 2019
Solution : Neutralization of soil is sometimes necessary in order to promote plant growth. The abili...
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answered Jan 8, 2019
Solution : A salt is formed during neutralization reaction.
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