WebPhosphate, Monohydrogen phosphate. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references. … WebFirst answerThe equivalent Weight of H3PO4 in the reaction:Ca(OH)2 + H3PO4 = CaHPO4 + 2H2O.second answer Equivalent weight of CA(OH)2 would be, the total mass of the compound divided by no. Of electrons gained or lost in the reaction. So here it is 2 thus the eqv. Wt would be 74/2 =32.third answer Equivalent weight stands for …
Equivalent Weight - Acids, Bases, Step by Step …
Web3 Therefore the best combination of weak acid and conjugate base for the buffer would be: Weak acid = A = H 2 PO 4− (dihydrogen phosphate) 2Conjugate base = B = HPO 4 − (monohydrogen phosphate) STEP 2: Now that the identity of the phosphate ions in the buffer has been established, the next task in hand is to determine the molar … WebThe number of moles (mol) is defined as the ratio of the mass of the compound to the molecular weight of the compound. One mole is equal to {eq}6.022 \times 10^{23} {/eq} atoms. ... a fraction of 100. It is often denoted by the symbol "%" or simply as "percent" or "pct." For example, 35% is equivalent to the decimal 0.35, or the fraction 35 /100. microsoft edge ram usage vs chrome
The gram equivalent weight of a metal is the weight of metal …
WebQ4/ A- Calculate the equivalent weight and normality of H3PO4 for a solution of 6M H3PO4 given the following reactions: (a) H3PO4(aq) + 3OH(aq) + PO_ ?(aq) + 3H2O(C) (b) H3PO4(aq) + 2NH3 (aq) HPO2(aq) + 2NH4+ (aq) (c) H3PO4(aq) + F(aq) H2PO4 + HF(aq) (The atomic weight of O=16 , H=1 , P= 31 ). B- Pyridine is a base (C6H5N with weight … When choosing primary standards in analytical chemistry, compounds with higher equivalent weights are generally more desirable because weighing errors are reduced. An example is the volumetric standardisation of a solution of sodium hydroxide which has been prepared to approximately 0.1 mol dm . It is necessary to calculate the mass of a solid acid which will react with about 20 cm of this solution (for a titration using a 25 cm burette): suitable solid acids include oxalic … how to check if my juvenile record is sealed