The molarity of pure water (d = 1 g/l) is [KCET 1993; CMC 1991, CPMT 1974, 88,90]

(1) 555 M

(2) 5.55 M

(3) 55.5 M

(4) None

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Concentration Term and Numericals
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Equal volumes of $0.1\mathrm{M}\text{\hspace{0.17em}}{\mathrm{AgNO}}_{3}$ and 0.2 M NaCl are mixed. The concentration of ${\mathrm{NO}}_{3}^{-}$ ions in the mixture will be

(1) 0.1 M

(2) 0.05 M

(3) 0.2 M

(4) 0.15 M

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Concentration Term and Numericals
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The molarity of H2SO4 solution that has a density of 1.84 g/cc at 35°C and contains 98% by weight is [CPMT 1983, 2000; CBSE 1996, 2000; AIIMS 2001]

(1) 4.18 M

(2) 8.14 M

(3) 18.4 M

(4) 18 M

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Concentration Term and Numericals
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Amount of oxalic acid $\left({\left(\mathrm{COOH}\right)}_{2}.2{\mathrm{H}}_{2}\mathrm{O}\right)$ in grams that is required to obtain 250 ml of a semi-molar solution is

(1) 17.25 g

(2) 17.00 g

(3) 15.75 g

(4) 15.00 g

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Concentration Term and Numericals
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Volume of 10 M HCl should be diluted with water to prepare 2.00 L of 5 M HCl is

(1) 2 L

(2) 1.5 L

(3) 1.00 L

(4) 0.5 L

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Concentration Term and Numericals
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The volume of 95% H2SO4 (density = 1.85 g cm–3) needed to prepare 100 cm3 of 15% solution of H2SO4 (density = 1.10 g cm3) will be [CPMT 1983]

(1) 5 cc

(2) 7.5 cc

(3) 9.4 cc

(4) 12.4 cc

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Concentration Term and Numericals
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The molarity of a $0.2\mathrm{N}\text{\hspace{0.17em}}{\mathrm{Na}}_{2}{\mathrm{CO}}_{3}$ solution will be [MP PMT 1987]

(1) 0.05 M

(2) 0.2 M

(3) 0.1 M

(4) 0.4 M

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Concentration Term and Numericals
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If 20 ml of 0.4 N NaOH solution completely neutralises 40 ml of dibasic acid. The molarity of acid solution is [EAMCET 1992; DPMT 1994; JIPMER 1994]

(1) 0.1 M

(2) 0.2 M

(2) 0.3 M

(4) 0.4 M

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H2SO4 solution whose specific gravity is 1.98 g ml–1 and H2SO4 by volume is 95%. The molality of the solution will be

(1) 7.412

(2) 8.412

(3) 9.412

(4) 10.412

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Difficulty Level:

The density of H2SO4 solution is 1.84 gm ml–1. In 1 litre solution H2SO4 is 93% by volume then, the molality of solution is [UPSEAT 2000]

(1) 9.42

(2) 10.42

(3) 11.42

(4) 12.42