Offline paper
Chemistry · 2015
JEE Main 2015 · 2015-04-04 Offline · Q31
The molecular formula of a commercial resin used for exchanging ions in water softening is C_8 H_7 SO_3 Na (Mol. wt. 206). What would be the maximum…
The molecular formula of a commercial resin used for exchanging ions in water softening is $\displaystyle \mathrm{C}_8 \mathrm{H}_7 \mathrm{SO}_3 \mathrm{Na}$ (Mol. wt. $\displaystyle 206$). What would be the maximum uptake of $\displaystyle \mathrm{Ca}^{2+}$ ions by the resin when expressed in mole per gram resin ?
Official answer
(4)
$\displaystyle \frac{1}{412}$
More from Some Basic Concepts of Chemistry
- A+2 B+3 C ⇌ AB_2 C_3 Reaction of 6.0 g of A, 6.0 × 10^23 atoms of B, and 0.036 mol of C yields 4.8 g of compound AB_2 C_3. If the atomic mass of A…2015
- If a rocket runs on a fuel (C_15 H_30) and liquid oxygen, the weight of oxygen required and CO_2 released for every litre of fuel respectively are:…2022
- 2 SO_2( g)+O_2( g) → 2 SO_3( g) The above reaction is carried out in a vessel starting with partial pressures P_SO_2=250 m bar, P_O_2=750 m bar and…2021
- 2.8 × 10^-3 mol of CO_2 is left after removing 10^21 molecules from its ' x ' mg sample. The mass of CO_2 taken initially is Given: N_A=6.02 × 10^23…2025
- The number of molecules and moles in 2.8375 litres of O_2 at STP are respectively2023
- For the given reaction; CaCO_3+2 HCl → CaCl_2+H_2 O+CO_2 If 90 g CaCO_3 is added to 300 mL of HCl which contains 38.55 % HCl by mass and has density…2026
- 10 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric flask of…2025
- In the Claisen-Schmidt reaction to prepare 351 g of dibenzalacetone using 87 g of acetone, the amount of benzaldehyde required is ____ g. (Nearest…2024
JEE Main 2015 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.