Chemistry questions
29404 published questions with worked solutions.
- The oxidation state of two sulphur atoms in H_2S_2O_8
- M is the molecular weight of KMnO_4 . The equivalent weight of KMnO_4 when it is converted into K_2MnO_4 is :
- What volume of 0.1 M KMnO_4 is needed to oxidise 100 mg of FeC_2O_4 in acidic solution?
- The anion nitrate is converted into ammonium ion. The equivalent mass of nitrate ion in the reaction would be:
- The eq. wt. of K_2CrO_4 as an oxidising agent in acid medium is :
- Oxidation number of sulphur in Caro's acid is
- The apparatus in which standard solution is prepared is known as :
- Volumetric estimation of CuSO_4 using hypo as intermediate solution along with KI solution and starch as indicator is an example...
- In the standardization of Na_2S_2O_3 using K_2Cr_2O_7 by iodometry, the equivalent weight of K_2Cr_2O_7 is :
- Milliequivalent of a solute in a solution can be given by:
- Starch gives blue colour with :
- The oxidation state of I in IPO_4 is
- The equivalent weight of a reductant or an oxidant is given by :
- When K_2Cr_2O_7 is converted into K_2CrO_4 , the change in oxidation number of chromium is
- The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate...
- How many gram of I_2 are present in a solution which requires 40 mL of 0.11 N Na_2S_2O_3 to react with it, S_2O_3^ 2- + I_2...
- Oxidation state of oxygen in H_2O_2 is
- Which one is not a redox titration?
- NaClO solution reacts with H_2SO_3 as, NaClO + H_2SO_3 NaCl + H_2SO_4 A solution of NaClO used in the above reaction contained 15...
- How many milligram of iron ( Fe^ 2+ ) are equal to 1 mL of 0.1055 N K_2Cr_2O_7 equivalent?